Quantitative Aptitude - Arithmetic Ability Questions

The labourers A, B, C were given a contract of Rs. 750 for doing a certain piece of work. All the three together can finish the work in 8 days. A and C together can do it in 12 day, while A and B together can do it in 13 1/3 days. The money will be divided in the ratio

The average of 5 members of a family is 24 years. If the youngest member is 8 years old, then what was the average age (in years) of the family at the time of the birth of the youngest member?

A can do a work in 36 days and B in 12 days. If they work on it together, then in how many days will they be able to do the work?

A train is moving at the speed of 90 km/hr. How many seconds it will take to cover a distance of 2275 meter?

The ratio of three numbers is 2 : 5 : 7. If their product is 1890, then what is the sum of the three numbers?

Select the odd word/letters/number/number pair from the given alternatives.

If (x2/yz) + (y2/zx) + (z2/xy) = 3, then what is the value of (x + y + z)3?

Two numbers are 30% and 37% lesser than a third number. By how much percent is the second number to be enhanced to make it equal to the first number?