CBSE - Aptitude Mathematics

If oranges are bought at the rate of 6 for a rupee, how many must be sold for a rupee in order to gain 20%? 1. 7 2. 5 3. 4 4. None of the above

For any set of variables 1.arithmetic mean &gt; geometric mean &gt; harmonic mean 2.arithmetic mean &lt; geometric mean &lt; harmonic mean 3.arithmetic mean &gt; geometric mean &lt; harmonic mean 4.arithmetic mean &lt; geometric mean &gt; harmonic mean

If hose A can fill up a tank in 20 minutes, and hose B can fill up the same tank in 15 minutes, how long will it take for the hoses together to fill up the tank? 1. 5 minutes 2. 7 1/2 minutes 3. 8 4/7 minutes 4. 12 minutes

The ratio of length and breadth of a rectangular park is 3 : 2. If a man cycles along the boundary of the park at a speed of 12 km per hour and completes one round in 8 minutes, the area of the park is (1) 1536 m 3 (2) 15360 m 3 (3) 153600 m 3 (4) 307200 m 3

Sumer Chand began business with Rs.9,000 and was joined afterwards by Ramesh Chand with Rs.10,800. If the profits at the end of the year were divided in the ratio of 2 : 1, then Ramesh Chand joined the business after 1. 4 months 2. 8 months 3. 7 months 4. 5 months