8 men and 12 women finish a job in 4 days. While 6 men and 14 women in 5 days. In how many days will 20 women finish the job?

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8 men and 12 women finish a job in 4 days. While 6 men and 14 women in 5 days. In how many days will 20 women finish the job?

A10

B20

C30

D15

Answer:

B. 20

Read Explanation:

M1 × D1 = M2 × D2 (8M + 12W) × 4 = (6M + 14W) × 5 32M + 48W = 30M + 70W 2M = 22W M : W = 11 : 1 total work done is = [ (8 × 11) + (12 × 1) ] × 4 = [ 88 + 12 ] × 4 = 400 20 women do this work in 400/20 days = 20 days

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