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11. A fort is provided with food for 80 soldiers t8 lal12. 1200 soldiers in a fort had enough food for 28 days. After 4 days, some soldwants to reach school IIILthe food last if 20 additional soldiers join after 15 days?sent to another fort and thus, the food lasted for 32 more days. How manleft the fort? |
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Answer» Total period = 60 daysAfter 15 days this period will be = 60 - 15 = 45 daysNumber of soldiers in the beginning = 80Number of soldiers join = 20New number of soldiers = 80 + 20= 100 Soldiers.Number of Soldiers Days 80 45 100 xMore men, the food will last lesser days.This is an inverse proportion.80 : 100 : : 45 : xx = (80*45)/100x = 36 days15 days has already gone, so, the food will last for 15 + 36 = 51 days instead of 60 days. |
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