A, B and C complete a work in 10, 12 and 15 days respectively. They started the work together. But A left the work before 5 days of its completion. B also left the work 2 days after A left. In how many days will the work completed? 

Three circles of radius 3.5 cm each are placed in such a way that each touches the other two. The area of the portion enclosed by the circles is 

Direction : What should come in place of the question (?) in the following question.

12 × 3.5 – 8.5 × 3.2 =?

A sum of ₹ 800 amounts to ₹ 920 in 3 years at the simple interest rate. If the rate is increased by 3 % p.a., what will be the sum amount to in the same period? 

3 men or 5 women can complete a work in 12 days. Accordingly, how much time will it take for 6 men and 5 women to do the same work?

Mohan gets 4 marks for each correct sum and losses 1 marks for each wrong sum. He attempted 30 sum and obtains 50 marks. The number of sums solved correctly is? 

The area of a rhombus is 216 cm² and the length of its one diagonal is 24 cm . The perimeter ( in cm ) of the rhombus is 

A ladder 20 m long is leaning against a vertical wall. It makes an angle of 30° with the ground. How high on the wall does the ladder reach?