A guy bought 10 pencils for Rs. 50 and sold them for Rs. 60.What is his gain in terms of percentage?

Find the H.C.F, if the numbers are in the ratio of 4 : 5 : 6 and their L.C.M. is 2400.

2 years ago A’s age was 6 times of B’s age. 6 years after the ratio between the ages of A and B becomes 10 : 3. Wha…

There are 10 items in a box, out of which 3 are defective. 2 items are taken one after the other. What is the probabilit…

The ratio of the current ages of Ajay and Vijay is 7:4. The ratio between Ajay's age 6 years ago and Vijay's age 6 years…

In covering a distance of 30 km, A takes 2 hours more than B. If A doubles his speed, then he would take 1 hour less tha…

Let N be the greatest number that will divide 1305, 4665 and 6905, leaving the same remainder in each case. The sum of t…

X and Y invest Rs.21000 and Rs.17500 respectively in a business. At the end of the year, they make a profit of Rs.26400.…