Ten years ago Aseet was half of Pradeep in age. If the ratio of their present age is 3 : 4, what will be the total of their present ages

8 years

20 years

30 years

45 years

None of these

Correct Answer : B

A number exceeds its four seventh by 18. What is the number

If m and n (n > 1) are whole numbers, such that mn = 121, the value of (m – 1)n + 1 is

if x/y=3/4 .the value of (6/7+y-x/y+x) is