In a Laboratory, the count of bacteria in a certain experiment was increasing at the rate of 2.5% per hour. Find the bacteria at the end of 2 hours if the count was initially 5,06,000.

The population of a place increased to 54,000 in 2003 at a rare of 5% per annum find the population in 2001

At a certain instant the volume of a sphere increses at the rate of 36 cm^3//sec and its surface area increases at the rate of 12 cm^2//sec . find the rate of change of its radius at that instant.

Find the amount to be paid: At the end of 2 year on Rs 2400 at 5% per annum compound annually.

f the radius of a circle increases at a constant rate 1/(2pi) unit per second, then find the rate of increase of its area, when the radius is 1 unit.

The population of a place increased to 54,000 in 2003 at a rate of 5% per annum what would be its population in 2005?

Water flows through a circular pipe whose internal diameter is 2 cm at the rate of 0.7 m per second into a cylindrical tank, the radius of whose base is 40 cm. By how much will the level of water rise in the tank in half an hour.

Work Problem related to speed, distance and time A men walks a certain distance at a certain rate. Had he walked 1/2 km per hour faster, he would taken one hour less. But if he had gone one km/hour slower, he would have taken three hours longer. Find the distance covered by the mann and his original rate of walking.