General Test - ...

A train covers a distance of 20 km in 15 minutes. If its speed is increased by 10 km/hr, the time taken by it to cover the same distance will be:

The speed of Ram and Shaym are in the ratio 7 ∶ 8. They both cover a certain distance but Ram takes 45 minutes more than Shyam. Find the time taken by Ram to cover the distance?

Two trains of lengths 160 m and 200 m travel at speeds of 48 m/sec and 52 m/sec respectively in opposite directions to each other. What is the total time taken by them to cross each other?

If the roots of \(ax^2+ bx + c =0\) are in the ratio \(m : n\), then:

If \(24\) is \(\frac{2}{3}\) of \(\frac{3}{4}\) of a number, then what will be \(\frac{1}{4}\) of that number?

A man bought \(13\) articles at Rs. \(70\) each,\(15\) at Rs.\(60\) each and\(12\) at Rs.\(65\) each. The average price per article is:

What is not the value of 5 \(\div\) ( -1) between?

A vessel of 80 litres is filled with milk and water. 70% of milk and 30% of water is taken out of the vessel. It is found that the vessel is vacated by 55%. Find the initial quantity of milk and water.

Two letters are chosen randomly from English alphabet. What is the probability that none of them is a vowel and they are consecutive letters?

The sides of a triangle are \(m, n\) and \(\sqrt{m^{2}+n^{2}+m n}\). What is the sum of the acute angles of the triangle?