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Question
16
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Two trains of equal lengths take 10 seconds and 15 seconds respectively to cross a telegraph post. If the length of each train be 120 metres, in what time will they cross each other travelling in opposite direction?
1. 9 s 2. 10 s 3. 11 s 4. 12 s
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Question
17
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A can contains a mixture of two liquids A and B in the ratio 7:5.When 9 litres of mixture are drawn off and the can is filled with B, the ratio of A and B becomes 7:9. How many litres of liquid A was contained by the can initially?
1. 21 2. 19 3. 18 4. 17
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Question
18
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A can type 10 pages in 5 minutes. B can type 5 pages in 10 minutes. Working together, how many pages can they type in 30 minutes?
1. 15 2. 25 3. 65 4. 75
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Question
19
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In a class of 100 students, 50 students passed in Mathematics and 70 passed in English, 5 students failed in both Mathematics and English. How many students passed in both the subjects?
1. 50 2. 40 3. 35 4. 25
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