Latest Exam Aptitude Question SOLUTION: aamir and birju can cut 5000 g of wood in 20 min.birju and charles can cut 5000 g of wood in 40 min.charles and aamir can cut 5 kg of wood in 30 min.how much time charles will tak

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(#M40165092) EXAM Numerical Ability question Keep an EYE

aamir and birju can cut 5000 g of wood in 20 min.birju and charles can cut 5000 g of wood in 40 min.charles and aamir can cut 5 kg of wood in 30 min.how much time charles will take to cut 5 kg wood alone??

Asked In Exam anuroop saxena (7 years ago)

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Devendra Marghade  (6 years ago)

4 hours.

Here quantity of cutting wood or work i.e. 5000 g or 5 kg is same. Let Aamir, Birju and Charles alone can complete the work in A, B and C minutes respectively, then
1 min. work of (A+B)=1/20, (B+C)=1/40 and (C+A)=1/30
Adding all we get 2(A+B+C)=1/20 + 1/40 + 1/30 = 13/120 or (A+B+C)=13/240
1 min. work of C = (A+B+C) - (A+B) = 13/240 - 1/20 = 1/240
So C alone can complete the work in 240 min. or 4 hrs.

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