Quantitative Aptitude - Arithmetic Ability Questions

One of the two inlet pipes works twice as efficiently as the other. The two, working alongside a drain pipe that can empty a cistern all by itself in 8 hours, can fill the empty cistern in 8 hours. How many hours will the less efficient inlet pipe take to fill the empty cistern by itself?

In triangle ABC, a line is drawn from the vertex A to a point D on BC. If BC = 9 cm and DC = 3 cm, then what is the ratio of the areas of triangle ABD and triangle ADC respectively?

What is the value of ( 1/3 + cosec30)?

Select the odd letters from the given alternatives.

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

Rearrange the jumbled up letters in their natural sequence ad find the odd one out.

Weight of A and B are in the ratio 11 : 8. A’s weight increases by 40% and the total weight of A and B increases by 30%. What is the percentage increase in the B’s weight?

Sec 45% + Tan 30% =