[" 37.Ten thousand volunteers are registered with a char- "],[" itable 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 "10,816" ."]

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.

In a charitable hospital 8000 blood donors are registered.Some students started encouraging people for this welfare work.As a restnumber of registered blood donors increased by 20% every six months.What will be the number of registered blood donors 1(1)/(2)- years?

Find a number : Which when increased by 10% becomes 66.

Three colonies of insects were each treated with a different pesticide over an 8-week period to test the effectiveness of the three pesticides. Colonies A, B, and C were treated with Pesticides A, B, and C, respectively. Each pesticide was applied every 2 weeks to one of the three colonies over the 8-week period. The bar graph above shows the insect counts for each of the three colonies 0, 2, 4, 6, and 8 weeks after the initial treatment. Of the following, which is closest to the ratio of the total number of insects in all three colonies in week 8 to the total number of insects at the time of initial treatment?