Question

Question 2:

A, B, and C can do a piece of work in 8 days. B and C together do it in 24 days. B alone can do it in 40 days. In what time will it be done by C working alone? 8 दिनों में A, B और C काम कर सकते हैं। B और C मिलकर 24 दिनों में करते हैं। B अकेले इसे 40 दिनों में कर सकता है। C अकेले काम करने से किस समय में होगा?

Single Choice (+3, -1)

50 days
60 days
30 days
75 days
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Answer 1

Answer:

(b) 60 days

Step-by-step explanation:

B and C do this work in 24 days. B alone does this work in 40 days.

C alone will take 1/24 – 1/40 = 2/120 = 1/60

⇒ 60 days to finish the work.

Answer 2

Answer:

(a+b+c) 1day work = 1/8

(b+c) 1day work = 1/24

b 1day work = 1/40

c 1day work = (b+c)-c

= 1/24 -1/40

= 5/120 -3/120

= 2/120

= 1/60

C can complete whole work in 60days

Step-by-step explanation:

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