IMO- Mathematics Olympiad Class 7: Questions 544 - 548 of 1012

In a company, there are 45 % female employees. 40 % of all the male employees are developer. If there 58 % employees are developer out of the total 1800 employees, then the number of female employees who are developer are ________.

Rohan has certain amount in his account. He gives two-third of this to his mother and one third of the remaining to his daughter. The amount left with him now is ________.

A school has 4500 students. The ratio of girls to boys 5: 4. How many girls are there in the class?

Equal sums of Rs. 5500 were lent to Neha and Suman at 10 % per annum for a period of 2 years and 3 years respectively. Find the difference of the interest paid by Neha and Suman.

There are three drums with 1653 liters, 2261 liters and 2527 liters of petrol. The greatest possible size of the measuring vessel with which we can measure the petrol of any drum while every time the vessel must be completely filled is ________.