According to the passage the increasing use of fertilizers is responsible for
abundance of food
disturbance in the ecological system
water pollution
increase in diseases
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The average age of husband, wife and their child 3 years ago was 27 years and that of wife and the child 5 years ago was 20 years. The present age of the husband is |
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The length of the bridge, which a train 130 meters long and travelling at 45 km/hr. can cross in 30 seconds, is: |
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Six bells commence tolling together and toll at intervals of 2, 4, 6, 8 10 and 12 seconds respectively. In 30 minutes, how many times do they toll together? |
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If a person walks at 14 km/hr. instead of 10 km/hr., he would have walked 20 km more. The actual distance travelled by him is: |
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M and N entered into partnership with capitals in the ratio 4: 5. After 3 months, M withdrew of his capital and N withdrew 1/5 of his capital. At the end of 10 months, the gain was Rs. 760. What is Ms share in the profit? |
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In a test, sixty percent students passed in Maths and 65% in History, 40% passed in both of these subjects. If 90 students failed in maths and history both, then what is the total number of students? |
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A man can row at 10 km/hr. in still water. If the velocity of current is 2 km/hr. and it takes him 10 hours to row to a place and come back, how far is the place? |
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In a secondary school the seats for Maths, physics and social studies are in the ratio 8: 5: 7. there is a proposal to increase these seats by 75%, 40% and 50% respectively. What will be the new ratio? |
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Mr. Kaushik invested an amount of Rs. 13,900 divided in two different schemes A and B at the simple interest rate of 14% per annum and 11% per annum respectively. If the total amount of simple interest earned in 2 years be Rs. 3508, what was the amount invested in Scheme B? |
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A and B can together finish a work 30 days. They worked together for 20 days and then B left. After another 20 days, A finished the remaining work. In how many days A alone can finish the work? |
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