Maths - Arithmetic

Find the percentage of pure gold in 22-carat gold. If 22-carat gold is 100% pure gold.

If 36 men can finish a piece of work in 25 days, how many days will 15 men take to do it?

A man covers a certain distances between his house and office on scooter. With an average speed of 30 km/hr, he is late by 10 min., however, with a speed 40 km/hr, he reaches his office 5 min earlier. Find the distance between his house and the office.

A boy walking at a speed of 10 km/hr reaches his school 15 minutes late. Next time his speed increase by 2 km/hr, but still he is late by 5 minutes. Find the distance of his school from his house.

A man covers a certain distances by car, driving at a speed of 70 km/hr and he returns back to the starting point riding on a scooter at 55 km/hr. Find his average speed for the whole journey.

Find the S.P. of a table whose CP is Rs 3300 and sold at a loss of 10%

The Scale of a map is 1: 2500000. What is the actual distances between two towns if they are 3 cm apart on the map?

If A:B=5:6 and B:C=8:9, then A:B:C=

On selling a fan for Rs. 810, Sunil gains 8%. For how much did he purchase it?

In an examination, one requires 40% marks to pass. Rahul gets 185 marks and fails by 15 marks. What is the maximum marks?