8 men can finish a work in 40 days. How many men can finish it in 20 days?
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1
Answer:
16
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0
Answer:
8 men = 40 days
1 man = 40/8 days
20 men = 40/8 × 20 = 40/4 × 5 = 25 days
( 25 days - how it came ? → 40 × 5 ÷ 4 = 25 )
( 40/4 × 5 - how it came ? → Reduce 8 and 20 by 4 = 8÷4 = 4 ; 20÷4 = 5 )
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