Quantitative Aptitude - Arithmetic Ability Questions

In the following question, select the odd word from the given alternatives.

If 3a=4b=6c and a+b+c=279 then a2+b2+c2 is equal to

20 kg of a mixture of wheat and husk contains 5% husk. How many kg more of husk must be added to make the husk content 20% in the new mixture?

A certain sum of money becomes 4 times of itself in 30 years at a rate of simple interest. In how many years it will become double of itself at the same rate of simple interest?

Rehman goes on a trip on his motor-cycle and rides for 661 kms. If he rides for 8 hours at a speed of 31 km/hr, find at what speed he travels for the remaining 7 hours of the journey?

A 145 m long train crosses a 655 m long bridge in 36 seconds. What is the speed of the train?

Simple interest on a sum for 5 years is equal to 20% of the principal. In how many years interest will be equal to the principal?

The volume of a cube is 166.375 cm3. Find its side (in cm).