Sum of the two numbers is 21 and their difference is 7. What is the half of the greater number?

If x+y=6, y+z=4 and z+x=2, then 2y-z-x?

One third the sum of 13 and a certain number is the same as one more than twice the number. Find out the numbe...

Out of total profit, A gets 40%, B 25%, C 20%, D 10%, and E 5%. What percentage of A's profit is that of B?

In redesigning a cold storage, the length is increased by 30%, the breadth is increased by 50% and the height...

If A and B are positive and A>B, which of the following is true?

Taxi fare is charged at Tk 15 per mile plus Tk 150 for a trip. If the total fare by taxi is Tk 600, then what...