The third proportional of two numbers 4 and 20 is

In a class of 50 students there are 27 girls. The average weight of these girls is 45 kg and average weight of the full class is 49.6 kgs. What is the average weight of the boys of the class?

Rehman goes on a trip on his motor-cycle and rides for 661 kms. If he rides for 8 hours at a speed of 31 km/hr, find at what speed he travels for the remaining 7 hours of the journey?

Two students appeared for an examination. One of them secured 16 marks more than the other and his marks were 75% of the sum of their marks. The marks obtained by them are

When a discount of 20% is given on a pizza, the profit is 32%. If the discount is 18%, then the profit is

If 5/6th of 7/6th of a number is 140, then 9/4th of that number is

What is the value of sin 300°?

If 6x + 4(2-x) > 3x -2 > 5x/2 - x/4; then value of x is