Sebongkahgula batu dimasukkan ke daiam air lalu diaduk. Dalam 1 menit, volume gula batu berkurang 20% dari volume sebelumnya. Jika volume gula diamati setiap menit, pada menit ke berapakah volumegula batumenjadi kurang dari seperempat volume awal?

Pembahasan

Peluruhan setelah waktu: Diketahui: pada menit ke? Pada menit ke-1: 0,25H end text end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mrow»«msub»«mtext»H«/mtext»«mn»1«/mn»«/msub»«mo»=«/mo»«mtext»H«/mtext»«mo»§#215;«/mo»«mo»(«/mo»«mn»1«/mn»«mo»-«/mo»«mn»0«/mn»«mo»,«/mo»«mn»2«/mn»«mo»)«/mo»«mo»=«/mo»«mn»0«/mn»«mo»,«/mo»«mn»8«/mn»«mtext»H§#160;§#62;§#160;0,25H«/mtext»«/mrow»«/mstyle»«/math»" height="17" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -5px;" width="220"> Pada menit ke-2: 0,25H end text end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mrow»«msub»«mtext»H«/mtext»«mn»2«/mn»«/msub»«mo»=«/mo»«mtext»H«/mtext»«mo»§#215;«/mo»«msup»«mfenced»«mrow»«mn»1«/mn»«mo»-«/mo»«mn»0«/mn»«mo»,«/mo»«mn»2«/mn»«/mrow»«/mfenced»«mn»2«/mn»«/msup»«mo»=«/mo»«mtext»0,64H§#160;§#62;§#160;0,25H«/mtext»«/mrow»«/mstyle»«/math»" height="19" role="math" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAOsAAAATCAYAAABxy/qhAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAABGJhU0UAAAAOJ5y/mQAAA3RJREFUeNrtWjFoFEEUXSRcEYJwhBDEQjjEIogEgkiQQwQrEREbSSXBTqxEkHCIvUWKENJKCEGQQySkEEQOSWEj4UghISAiEiSkszjCIaz/k78wDLOzO3Pzd3fWefAw3s3OzZ8/b/7/sxNFAb7jMfAP8BfwTpiOgIDq4hWwAWwDD8N0BNQFS8COx2Nf0nw/BjwJLg6oA+4C33huwybZocIT4HJwc/0RW37ny+9j1PkOnJQ+vwR8Aewz2HQduAscUv/tjPZYb+5Qe/x3DTghtcHxH1DaK+ImcIvsLNOGZIzLlJLjc1+AtzUbaOx4PXymcVfJb3EKrWz2TaydlHQ27fNHwBXF5xvARQYbW8B94Bz9f45E1tI8sw28ATwjjLmraLdC34kbzrZCwGXYgIu0JyxwtOUW8IOibRP4jUGs88BPlqLl8lvsUgM+RlZZmB1NPdqN9Celrm1clQQV0aawatAHOn+QspOLi6FHgo0qYMPL6PR0Og9wo1xgEKtKtPMl+62yYo0z6DIN7khMw5EiNeEUK6bcU4r08KdBHxeoHxnjwGPNfLvyiY0NmD6ez2EbbjhvNXPvcj0mou3lEC2X35yL1dSZriOr7e9/JOrwd4SJshlf2u8NDeYEa9B7DvqxhY0NA6pP+/Q3CvKKIv3dE84PYsfrIQ1PczzL5beY+sA6Hg8JZ0ex2dcDpryRdVSxulroeV6tTET6U9+yxXqS8cw7IS0/B3wvLd514P2MuXcdWXs5Iyu338ZpLnaplv9v0mCTmvU38GyBYj1QpFNTKWmtiOno9PXSxYxFcVSAT2xswHGNKSLpjxxj4ahZUaA7BjUrp9/kPvvcYuW62sZ9GlzGAdOi4qBiTfNMk6JSM0e91y0gstrYsE41mxxNvhrO/ainwYlI2xXymwgMHPvcYuW62sadhqe9uuESa/IKIKlNrtHuLL4C2JBEh7XOZcsFxQEbG2ZIJDNCxNlUpHycYrURKbffXgubWItKgwdFpcGur7Zxi7VBKc5kjvTQFdqU6gypRpEX0CFlKSbp4TQtpkZUDExtQFylyDagiDNr4fsyz1A4/IbB4ljoc6FIm3282lbF64Z7hu2zDjB8sKEO8MZmrqttRSDrMnyReAZ8aNAer0U+r9h8mtpQB3hjM9fVtoCAAMfgutoWEBDgGEXfbAoICCD8Awc2pOioYSWrAAABTHRFWHRNYXRoTUwAPG1hdGggeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzE5OTgvTWF0aC9NYXRoTUwiPjxtc3R5bGUgbWF0aHNpemU9IjE0cHgiPjxtc3ViPjxtdGV4dD5IPC9tdGV4dD48bW4+MjwvbW4+PC9tc3ViPjxtbz49PC9tbz48bXRleHQ+SDwvbXRleHQ+PG1vPiYjeEQ3OzwvbW8+PG1zdXA+PG1mZW5jZWQ+PG1yb3c+PG1uPjE8L21uPjxtbz4tPC9tbz48bW4+MDwvbW4+PG1vPiw8L21vPjxtbj4yPC9tbj48L21yb3c+PC9tZmVuY2VkPjxtbj4yPC9tbj48L21zdXA+PG1vPj08L21vPjxtdGV4dD4wLDY0SCYjeEEwOyZndDsmI3hBMDswLDI1SDwvbXRleHQ+PC9tc3R5bGU+PC9tYXRoPphI5UYAAAAASUVORK5CYII=" style="max-width: none; vertical-align: -5px;" width="235"> Pada menit ke-3: 0,25H end text end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mrow»«msub»«mtext»H«/mtext»«mn»3«/mn»«/msub»«mo»=«/mo»«mtext»H§#215;«/mtext»«msup»«mfenced»«mrow»«mn»1«/mn»«mo»-«/mo»«mn»0«/mn»«mo»,«/mo»«mn»2«/mn»«/mrow»«/mfenced»«mn»3«/mn»«/msup»«mo»=«/mo»«mtext»0,512H§#160;§#62;§#160;0,25H«/mtext»«/mrow»«/mstyle»«/math»" height="19" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -5px;" width="242"> Pada menit ke-4: 0,25H end text end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mrow»«msub»«mtext»H«/mtext»«mn»4«/mn»«/msub»«mo»=«/mo»«mtext»H«/mtext»«mo»§#215;«/mo»«msup»«mfenced»«mrow»«mn»1«/mn»«mo»-«/mo»«mn»0«/mn»«mo»,«/mo»«mn»2«/mn»«/mrow»«/mfenced»«mn»4«/mn»«/msup»«mo»=«/mo»«mtext»0,41H§#160;§#62;§#160;0,25H«/mtext»«/mrow»«/mstyle»«/math»" height="19" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -5px;" width="235"> Pada menit ke-5: 0,25H end text end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mrow»«msub»«mtext»H«/mtext»«mn»5«/mn»«/msub»«mo»=«/mo»«mtext»H«/mtext»«mo»§#215;«/mo»«msup»«mfenced»«mrow»«mn»1«/mn»«mo»-«/mo»«mn»0«/mn»«mo»,«/mo»«mn»2«/mn»«/mrow»«/mfenced»«mn»5«/mn»«/msup»«mo»=«/mo»«mtext»0,33H§#160;§#62;§#160;0,25H«/mtext»«/mrow»«/mstyle»«/math»" height="19" role="math" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAOsAAAATCAYAAABxy/qhAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAABGJhU0UAAAAOJ5y/mQAAAzpJREFUeNrtWj1oFEEUHg5JEYIgIVhYCEFSiIgQJAQ5bCxF7CSVHPYWISDhsBIbyyDpxCKIzSEiKQSRIMFCCBKsjgOLICGEdCISlsD6HvcWlnF2b2Z23u7M3Xzwcdze27l9+9438+ZHiIjQkUqMiIjwWKwREWOHdWA34Gdfj2KNmATcA74N3Ic35Ics1lPgB+ClGObJLqXSMfj/c8CfwFnp+gLwKXCfwadbwO/AhNpvj7C/C9wle/zcBM5INvj8A+CUdB3tngG/NuwDdiR7ZP8X+BF408KmSj58oef2KW5pAa18Dk2s3YJytuj6I+CG4voWsMPg4zywD1yk74sksvmSe7aBt4Gt3DP3FHYb9JsKScM+vAcukQ/YQT4GHljYVMnHZeBnS9FyxS11qYEQR1ZZmN2S+WiPesC6fHypEFSHruuiRSOPqidXifgh8IdnPqAYTyxsXORjXrTLDcfNW7GmI+iyDO5KLMKxojThFCuW3HOKEvbAoI3L1I6MaSm5UxpRvwGvOoxJFR8wYa8DX5V0kmU2LvMxE+2Ohmi54uZcrKbBdD2y2v7/J2IZziq8KJvnO3NQpuKC0f0ayl3Td5ZovqtflLg2Nhz5uKpxL1fcsg71UAwXCW9U8TnUBSbdkbWqWF0l+qnGvTNCverri1h1fGjRKNaj+ampjeuRdUdzZOWO2zQJGRew7kxSGWwyZz0Cnq9RrANFOTVXUNbmcVEMt5eujEiK4xpiYuuDbD+wsHE1Z0WB7hrMWTnjJre5zy1WrvKYezW4iQWmjmKhYrPkngvAd/RZhqIFJuGBD6rR84+FTdXV4EykbY/ilgcOHP06xOpTGayLoq0bLr+yLYBsbrJEvXN+C2BLEh3Oda5ZJhQHbHzYzpW0mJAvFO9dx6ZKPtiIlDtur3Nzc2wLt68eRLGqMUUlzqxGeegKbSp1EpqjyAmEiw2/NUpVudzqi/8PRXDB1Acc9fdo7oe/PRfDrRlhaNPkGgpH3HCwOMm1uVKHBkI+2ubjcUPTfdFRCxgh+DAOCMZnrqNtdaDoMHwTWBPDgwy6wGORTzx7n6Y+jAOC9DkRERER3sP10baIiAjH0DnaFhERwYB/7kami3vWoUIAAAFMdEVYdE1hdGhNTAA8bWF0aCB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMTk5OC9NYXRoL01hdGhNTCI+PG1zdHlsZSBtYXRoc2l6ZT0iMTRweCI+PG1zdWI+PG10ZXh0Pkg8L210ZXh0Pjxtbj41PC9tbj48L21zdWI+PG1vPj08L21vPjxtdGV4dD5IPC9tdGV4dD48bW8+JiN4RDc7PC9tbz48bXN1cD48bWZlbmNlZD48bXJvdz48bW4+MTwvbW4+PG1vPi08L21vPjxtbj4wPC9tbj48bW8+LDwvbW8+PG1uPjI8L21uPjwvbXJvdz48L21mZW5jZWQ+PG1uPjU8L21uPjwvbXN1cD48bW8+PTwvbW8+PG10ZXh0PjAsMzNIJiN4QTA7Jmd0OyYjeEEwOzAsMjVIPC9tdGV4dD48L21zdHlsZT48L21hdGg+EDiPpwAAAABJRU5ErkJggg==" style="max-width: none; vertical-align: -5px;" width="235"> Pada menit ke-6: 0,25H end text end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mrow»«msub»«mtext»H«/mtext»«mn»6«/mn»«/msub»«mo»=«/mo»«mtext»H«/mtext»«mo»§#215;«/mo»«msup»«mfenced»«mrow»«mn»1«/mn»«mo»-«/mo»«mn»0«/mn»«mo»,«/mo»«mn»2«/mn»«/mrow»«/mfenced»«mn»6«/mn»«/msup»«mo»=«/mo»«mtext»0,26H§#160;§#62;§#160;0,25H«/mtext»«/mrow»«/mstyle»«/math»" height="19" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -5px;" width="235"> Pada menit ke-7: Pada menit ke-t volume gula batu menjadi kurang dari seperempat volume awal. Jadi, jawaban yang tepat adalah E.