The number of boys in a class is 16% more than the girls, what is the respective ratio of the number of boys to the number of girls in the class?

The side of a trapezium pyramid with a square base is 24 cm. and its height is 5 cm. What will be the area of its oblique surface in cm²?

A man spend 15% of his income. If his expenditure is Rs.75, his income (in rupees) is:

What is the total compound interest on Rs.45000 for 3 years when the sum is divided into a ratio of 4 : 5 and rate of interest on a small sum is 10% and 20% on the large sum? (Compounded annually)

The total area of a circle and a square is 5450 cm². The diameter of the circle is 70 cm. What is the difference between the circumference of the circle and the perimeter of the square?

A man bought an old typewriter for ₹1200 and spent ₹200 on its repair. He sold it for ₹1680. His profit percent is :

If (x+20)% of 250 is 25% more than x% of 220, then 10% of (x + 50) is what per cent less than 15% of x?

A starts a business with ₹45,000. After 6 months Benters in his business with ₹80,000. After one year Cinvests ₹1,20,000. In what ratio the profit will be divided among A, B and C after two years?