The ratio 75: 125 in its simplest form is written as: 

If P is 15 years old now and Q will be 26 years old after 6 years, what is the ratio of their percentages? 

Mohan gets 3 marks for each correct sum and loses 2 marks for each wrong sum. He attempts 30 sums and obtains 40 marks. The number of sums solved correctly is:

If a man estimates his loss as 20% of the selling price, then his loss percent is:

If a chair sold for Rs. 600 at the profit of 20%, then the original price of the chair is:

12 men complete a work in 18 days. Six days after they had started working, 4 men joined them. How many days will all of them take to complete the remaining work?

If A can do a work in 10 days and B can do the same work in 15 days, then how many days will they take to complete the work both while working together?

The sum of three numbers is 252. If the first number is thrice the second and third number is two-third of the first, then the second number is