Neetu is 11 years younger than Bharti. Fifteen years later Bharti Neetu's age will be 1.2 times. What is Neetu's present age?

If $$ {0.7\over 1-6c}=-0.2$$ then what is the value of c.

At the rate of 8 % simple annual interest, if an amount becomes Rs. 819 in 3 years and 3 months, then what was the original amount?

Find out the H.C.F of 306, 204 and 136.

Shyam covers a distance of 400 km in 5 hours. He traveled for some time at a speed of 85 km / h and the rest at a speed of 55 km / h. How long did he travel at high speed?

What should be added to $$ {10 \ over 11} $$ to get the sum $$ {11 \ over 10} $$?

In equation $$ {x^{2}-24x+k=0}$$ the first root is x=2 then find out  the second root of equation.

From a right cone of height h and with base radius r a cone has been cut of from the centre of the height. The volume of remaining frustum of the cone is.