A Can do 1/3 of the work in 15 days, B can do 75% of the same work in 18 days and C can do same work in 36 days B and C work together for eight days in how many days a alone can complete the remaining work

A किसी कार्य का एक तिहाई को 15 दिन में कर सकता है Bउसी काम के 75% भाग को 18 दिन में कर सकते हैऔर सी अकेला उस काम को 36 दिन में कर सकते हैं B और C 8 दिन तक साथ काम करते हैं तो बताओ शेष काम Aअकेला कितने दिन में कर सकता है

This Question Asked In:
SSC, CGL
  • A. 24
  • B. 20
  • C. 16
  • D. 18
Correct Answer :B - 20
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Detailed Text Solution

A can do 1/3rd of the work in = 15 days

A can do the whole work = 15 × 3 = 45 days

B can do 75% of the work in = 18 days

B can do the whole work = 18 × (100/75) = 24 days

C can do the whole work = 36 days

Total work = 360

∴ The efficiency of A, B and C is 8 : 15 : 10 respectively

Work done by B and C in 8 days
= (15 + 10) × 8
= 200

Remaining work = 360 − 200 = 160

∴ Remaining work A will complete in
= 160 / 8
= 20 days

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