10 women can do half part of the total work in 20 days. How many more women will be required to complete the remaining work in 4 days?
Show answer & explanation
Correct answer: C
Explanation
Number of additional women = x
(10 × 20) ÷ 1/2 = (10 + x) × 4 ÷ 1/2
10 × 20 × 2 = (10 + x) × 4 × 2
400 = (10 + x) × 8
10 + x = 50
x = 50 – 10 = 40