If 3 ×4 = 25, 5 × 6 = 61, 6 × 7 = 85 then 9 × 10 = ?

If 20/Y = Y/45,what is the value of y?

The difference in selling price of a radio at gains of 10% and 15% is Rs. 80. Find the price of the radio.

What percentage is 1/8 ?

One fifth of a number exceeds its one seventh by 154. Find the number

A boy was required to divide a given number by 3/5 while he wrongly multiplied the same number with 3/5 . If he gets the answer as 4 1/2 what is the correct answer?