Exams

A and B can together complete a task in 18 hours. After 6 hours A leaves. B takes 36 hours to finish rest of the task. How many hours would A have taken to do the task if he worked alone?

The average revenues of 9 consecutive years of a company is Rs 80 lakhs. If the average of first 5 years is Rs 75 lakhs and that of last 5 years is Rs 87 lakhs, find the revenue for the 5th year.

Magnesium (Mg) + Oxygen (O2) = ?

The sum of the present ages of two cousins is 46 years. Eight years ago, the elder one was twice as old as the younger one. What is the present age of the elder cousin?

Peter belongs to Town A and Paul belongs to Town B. They start their journeys towards each others towns following the same route at the same time. They meet somewhere on the way and continue with their journeys. After meeting Paul, Peter takes another 13.5 hrs to reach his destination while Paul takes another 6hrs to reach Peter's town. If Peter travelled at the speed of 30 kmph, what was Paul's speed in kmph?

The question below consists of a set of labelled sentences. Out of the four options given, select the most logical order of the sentences to form a coherent paragraph.
P- On the earth, liquid forms and solid forms (ice/snow) predominate.
Q- The water cycle has two distinct branches the atmospheric branch and the terrestrial branch.
R- Water plays a versatile role in the functioning of the biosphere.
S- In the atmospheric, water exists mainly in gaseous form.

In the following question, select the related number pair from the given alternatives.
534 : 2 : : ? : ?

Which of the following may cause the breakdown of pyruvate into lactic acid in our muscles?