If 90 women working 9 hours a day can do a piece of work in 18 days, in how many days will 54 women working 6 hours a day do the same work?
Explanation:
Work rate = 90 women
Time = (18 × 9) hours
∴ Work done = (90 × 18 × 9) women hours
Later, work rate = 54 women
Time = (d × 6) hours (d = number of days)
Since work done is the same,
∴ 90 × 9 × 18 = 54 × 6 × d
d = 45 days
Hence, option (e).
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