A fraction is greater than twice its reciprocal by 7/15. What is the fraction?

If a3- b3= 91 and a - b = 1, then what is the value of ab?

If 5x/2 - [7(6x - 3/2)]/4 = 5/8, then what is the value of x?

The compound interest earned in two years at 15% per annum is Rs 20640. What is the sum invested (in Rs)?

A man travelled a distance of 99 km in 9 hours. He travelled partly on foot @ 9 km/hr and partly on bicycle @ 18 km/hr. What is distance (in kms) travelled on foot?

Two labourers A and B are paid a total of Rs. 1120 per day. If A is paid 180 percent of what is paid to B, how much (in Rs) is B paid?

A vendor buys 12 bananas for Rs 60 and sells 5 bananas for Rs 32. What will be his gain (in %)?

A batsman makes a score of 81 runs in the 16th match and thus increases his average runs per match by 3. What is his average after the 16th match?