A can do a piece of work in 16 days while B can do it in 20 days. With the help of C, they together can finish the work in 4 days. If they are paid Rs. 800 for the whole work, how much money is received by B?

The ratio of monthly incomes of A and B is 5 : 6 and their monthly expenditures in ratio of 2 : 3. If each of them saves Rs. 330 per month. Find the sum of their monthly income.

Chiku and Deepti are working on an assignment. Chiku takes 7 hrs to types 35 pages on a computer, while Deepti takes 9 hrs to type 54 pages. How much time will they take working together on two different computers to type an assignment of 88 pages.

If the area of a trapezium is 209 sq. m and the length of its parallel sides are 13 m and 9 m respectively, then the distance between parallel sides is