A car driver's income consists of his salary and tips. His salary is Tk. 50 a week. During one week his tips were 5/4 of his salary. What fraction of his income for the week came from tips?

If the area of a square increases by 69%, then the side of the square increases by ----

The sum of square of two numbers is 80 and the square of their difference is 16. What is the product of the tw...

The ratio of boys and girls in a class 1 : 2 and the classroom has 24 students. How many boys would have to be...

The compound interest at 10% per annum on certain amount of money for two years is Tk. 10.50. What is the prin...

What is the minimum number of apples that must be added to the existing stock of 264 apples so that the total...

In a club 60% members are male and 70% members are graduates. Again, 50% of the graduate members are male. Wha...