There is a provision of food for 50 days for 1000 soldiers in a fort. How many soldiers should leave after 15 days so that the remaining food last for 40 more days?
After 15 days, provision lasts for (50 - 15) i.e. 35 days for 1000 soldiers.
Let the food may last for 40 days for x soldiers.
No. of days the No. of soldiers
Here, the number of days is inversely related to the number of soldiers. So as the days increases, the number of soldiers will decrease.
Cross-multiplying, we get
Hence, the number of soldiers left = 1000 - 875 = 125