Ten thousand volunteers are registered with a charitable trust. The number of volunteers increases at the rate of 4% for every six months. Find the time period at the end of which the total number of volunteers becomes 10816.

24000 blood donors were registered with a charitable hospital. The number of donors increased at the rate of 5% every six month. Find the time period at the end of which the total number of blood donors becomes 27783.

24000 blood donors were registered with a charitable hospital. The number of donors increased at the rate of 5% every six month. Find the time period at the end of which the total number of blood donors becomes 27783.

This year the number of blood donners in a hospital is 24000. If the number of blood donners increases by 5% in every 6 months, then in how much time will the number of blood donners be 27783?

The simple interest on a certain sum of money is (3)/(16) of the principal and the number of months is equal to the rate per cent. Find the rate per annum and the time period.

The total numbers of males and females in a town is 70,000. If the number of males is increased by 6% and that of the females is increased by 4% , then the total numbers of males and females in the town would become 73520. Whatis the difference between the numberof males and females in the town, in the beginning?

Find the number which when increased by 12% becomes 840.