A farmer can reap a field in 10 days while his wife can do it in 8 days(she does not waste time in smoking). if they work together , in how much time can they reap the field?
chapter 8 DIRECT AND INVERSE VARIATIONS
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Answer:
40/9 days
Step-by-step explanation:
A farmer can reap a field in 10 days while his wife can do it in 8 days.
Work done by farmer in one day = 1/10 days
Work done by his wife in one day = 1/8 days
We have to find that in how much time can they reap the field. Means days taken by both of them together.
Word done by both famer and his wife in one day = Work done by farmer + Work done by his wife
= 1/10 + 1/8
= (4 + 5)/40
= 9/40
Hence, the both of them reap the field in 40/9 days.
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