Practicing Success
Practicing Success
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12 girls can do a a piece of work in 30 days, working 8 hours a day . In how many days 18 girls can do the same piece of work while working 4 hours a day? |
30 days 45 days 40 days 60 days |
40 days |
M1 × D1 × T1 = M2 × D2 × T2 12 × 30 × 8 = 18 × D2 × 4 D2 = 12 × 30 × 8/ 18 × 4 D2 = 40 days |
