1.

9 Men And 12 Boys Finish A Job In 12 Days, 12 Men And 12 Boys Finish It In 10 Days. 10 Men And 10 Boys Shall Finish It In How Many Days?

Answer»

9M + 12B ----- 12 days

12M + 12B ------- 10 days

10M + 10B -------?

108M + 144B = 120M +120B

24B = 12M => 1M = 2B

18B + 12B = 30B ---- 12 days

20B + 10B = 30B -----? => 12 days.

9M + 12B ----- 12 days

12M + 12B ------- 10 days

10M + 10B -------?

108M + 144B = 120M +120B

24B = 12M => 1M = 2B

18B + 12B = 30B ---- 12 days

20B + 10B = 30B -----? => 12 days.



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