1. | If 3 men or 4 women can construct a wall in 43 days, then the number of days that 7 men and 5 women take to construct it is ? |
| A. | 12 days |
| B. | 14 days |
| C. | 16 days |
| D. | 18 days |
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| Answer: Option A |
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| Explanation: |
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3 men does same work as 4 women in 43 days.
multiply 3 and 4 and 43 for a supposed amount of total work (516).
Now calculate how much work is done by 3 men in one day by dividing 516 by 43 (12). Then calculate one man work in one day by dividing 12 by 3 (4).
Same (12) amount of work is done by 4 women in one day. so one women does 12/4 (3) in one day.
now see there are 7 men and 5 women in the final team. total amount of work in one day will be
7(4)+5(3) = 43
Now divide total work (516) by total work in one day (43) to get the answer (12) |
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Tutorial Link: |
Published by:Michael Daani
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