Question no 1550 SSC CGL Tier 1 Quantitative Aptitude Questions and Answers Free Online Mock Test 38

SSC CGL Tier 1 :: QA Test 38

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1 .

If 60 men can complete a work in 30 days working 12 hrs a day. In how many days will 90 men complete the work, working 8 hr a day?

[ A ] 20 days
[ B ] 27 days
[ C ] 30 days
[ D ] 31 days

Answer : Option C

Explanation :

60 men working 12hr a days complete a work in 30 days
1 Man work in 1 hr a day complete a work in = 30 × 60 × 12 = 21600 days
∴ 90 men working 8hr a day can complete the same work in = $21600\over90x8$ = 30 days

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