20 men can complete a work in 14 days and 20 women can complete the same work in 18 days 7 men and 9...........

Quantitative Aptitude ( CCS) Time and work

20 men can complete a work in 14 days and 20 women can complete the same work in 18 days. 7 men and 9 women started the work. After working for some days, they were replaced by 10 men and 10 women who complete the remaining work in 9 days. How much work was completed by initially employed men and women?

2/5

3/7

4/7

3/8

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Explanation:

Answer & Explanation
3/7
Explanation:
20 m in 14 days so 10 men in (20*14)/10 = 28 days
20 w in 18 days so 10 women in (20*18)/10 = 36 days
So (1/28 + 1/36)*9 = 4/7
So 1 – 4/7 = 3/7 work was done by 7 men and 9 women

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