Ramesh sold a phone at a loss of 5%. Had he sold it for Rs. 200 more, he would gave gained 15%. To gain 25%, he should sell it for :

Select the number that will come in place of the question mark (?) in the following mathematical statement.

$${5\over 9} \ of \ {11\over 14}\ 42\% \ of \ 540=?^2 -45 $$

The cost price of 12 pens is equal to the selling price of 8 pens. The profit percentage is:

The marked price of a radio is Rs. 480. The shopkeeper allows a discount of 10% and still gains 8%. If no discount is allowed, find his gain percent.

180 m long Train A crosses Train B of 120 m in length which is running in opposite direction in $$ {60\over 11}$$ sec. If speed of train B is 20% more than that of train A, then find the time taken by both trains to cross each other, when they running in same direction?

The HCF of two numbers, each having three digits, is 17 and their LCM is 714. The sum of the numbers will be: 

A man walks a certain distance and rides back in 4 hours 30 minutes. he could ride both ways in 3 hours. The time required by the man to walk both ways is 

If p men working p hours per day for p days produce p units of work, then the units of work produced by n men working n hours a day for n days is