2 men and 7 women can complete a work in 28 days whereas 6 men and 16 women can do the same work in 11 days. In how many days can 7 men complete the same work?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e 22.
Let the efficiency of 1 man and 1 woman be 'm' and 'w' unit.
Now according to the question,
⇒ (2m + 7w) × 28 = (6m + 16w) × 11.
⇒ m = 2w.
Total work = 11w × 28.
Number of days required by 7 men to finish the same work,
⇒ 22 days