1) A, B, and C invested some money in ratio 3 : 4 : 5. After some time, they receive a profit which is divided among them in ratio 4 : 5 : 6. Find the ratio of the time of their
respective investments.

2) A motorboat in still water travels at a speed of 36 kmph. It goes 56 km upstream in 1 hour 45 minutes. The time taken by it to cover the same distance down the stream will be.

3) A trader bought two horses for Rs 19,500. He sold one at a loss of 20% and the other at a profit of 15%. If the selling
price of each horse is the same, then their cost prices are respectively

4) The internal diameter and the height of a right circular
cylinder are 11.2 cm and 21 cm respectively. The metal around its outer body is 0.4 cm thick. What is the volume of the metal?

5) In an examination a student who gets 20% of the maximum marks fails by 5 marks. Another student who scores 30% of the maximum marks gets 20 marks more than the pass marks. The necessary percentage required for passing is.

Directions (6-10):Find out the wrong number in the
following number series.

12 25 52 55 57 115 117

7) 2478 819 257 84 24 5

8) 2 3 6 15 45 160 630

9) 199 176 195 180 190 184 187

10) 9 17 65 385 3073 30723