A DVD player was purchased for Rs 4860. At what price should it be sold so that 25% profit is earned?

Present ages of father and the son are in the ratio of 6 :1 respectively. 4 year hence the ratio of their ages will become 4:1 respectively. What is the son's present age ? 

Shrikant and Vividh started a business investing amounts of Rs 185000 and Rs 225000 respectively. If Vividh's share in the profit earned by them is Rs 9000 what is the total profit earned by them together ?

Find the average of the following set of numbers 148, 88, 184, 166, 96, 122

Simple interest accrued on an amount in 8 yr @ 12 % per annum is Rs 5520 What is the principal amount ?

If the fractions $$ {9\over11}$$, $$ {7\over9}$$, $$ {5\over6}$$ and $$ {11\over13}$$ are arranged in ascending order, which one will be the fourth?

Cost of 18 shirts and 45 trousers is Rs 68,400. What is the cost of 10 shirts and 25 trousers?

What is compound interest accrued on an amount of Rs 45000 in 2 yr @ 9% per annum ?