Three-fourth petrol of a reservoir is used to fill the petrol tanks of five trucks having the same storage capacity. What part of the total capacity of the petrol reservoir did each truck receive?

A boat sails m miles upstream at the rate of r miles per hour. If the rate of the stream is s miles per hour,...

Three times a number minus 7 is 32. What is the twice of the number?

In an examination of four subjects, a student got 70,80, 90 and x marks and his average was 75. What was the v...

If p number of pencils cost c paisa, how many pencils can be bought for taka?

The temperature in a home freezer varies from 25 degree F to 3 degree F. What is the difference, in Celsius, b...

If r=18 and r/s = 6/y, then y/s is ----