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in Aptitude by (79.8k points)

To do a certain work, B would take time thrice as long as A and C together and C twice as long as A and B together. The three men together complete the work in 10 days. The time taken by A to complete the work separately is: 

(a) 22 days 

(b) 24 days 

(c) 30 days 

(d) 20 days

1 Answer

+1 vote
by (71.7k points)
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Best answer

Correct option (b) 24 days

Explanation: 

According to question,

Since we know, efficiency of persons will remain same. 

So we will balance it.

Now we can see, B’s efficiency is 3 units and C’s is 4 units and total is 12 units.

So A’s efficiency is 12 – 4 – 3 = 5 units 

Total work = 10days × 12units 

A can complete separately in

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