If it has rained 276 mm in the last 3 days, how many cm of rain will fall in one full week ( 7 days ) ? Assume that the rain continues to fall at the same rate.

The ranfall (in mm) in a city on 7 days of a certain week was recorded as follows: On how many days was the rainfall less than the mean rainfall?

A train time table must be compiled for various days of the week, so that two trains twice a day depart for three days, one train daily for two days, and three trains once a day for two days. How many different time tables can be compiled?

The sum of the ages of A and B is 85 years. 5 years ago, the age of A was twice that of B. Find the present ages. OR A piece of work can be done by 2 men and 7 boys in 4 days. The same piece of work can be done by 4 men and 4 boys in 3 days. How long it would take to do the same work by one man of one boy?

The temperature dropped 15 degree celsius in the last 30 days. If the rate of temperature drop remains the same, how many degrees will the temperature droop in the next ten days?

Sand is pouring from a pipe at the rate of 12cm^(3)//s . The falling sand forms a cone on the top of ground in such a way that the height of the cone is always one-sixth of the radius of the base. How fast is the height of the sand cone increasing when the height is 4cm?

Sand is pouring from a pipe at the rate of 12 cm^(3) /s. The falling sand forms a cone on the ground in such a way that the height of the cone is always one-sixth of the radius of the base. How fast is the height of the sand cone increasing when the height is 4 cm?

Sand is pouring from a pipe at the rate of 12cm^(3)//sec. The falling sand forms a cone on the ground in such a way that the height of the cone is always one-sixth of the radius of the base. How fast is the height of the sand cone increasing when the height is 4 cm?

Sand is pouring from a pipe at the rate of 12 cm^(3)//s . The falling sand forms a cone on the ground in such a way that the height of the cone is always one-sixth of the radius of the base. How fast is the height of the sand cone increasing when the height is 4cm?