If P is 15 years old now and Q will be 26 years old after 6 years, what is the ratio of their percentages? 

Two circle X and Y with centres A and B intersect at C and D. If area of circle X is 4 time area of circle Y, then AB=?

Vikram gives 35% of the money he had to his wife and gave 50% of the money he had to his sons. Remaining amount of Rs. 11,250 he kept for himself. What was the total amount of money Vikram had?

The difference of two numbers is 15 % of their sum. the ratio of the larger number to the smaller number is: 

In an election 20% of the voters did not vote and 120 votes were invalid. Winner got 200 votes more than this opponent and secured 41% votes of the total number of votes. What percentage of the votes defeated candidate got out of the total votes cast?

The height of a wall is six times its width and the length of the wall is seven times its height. If volume of the wall be 16128 cube m, its width is 

Simplify : $$ {9\over 13} ÷{18\over 26}÷{90\over 52}$$