B is thrice as efficient as A and C is 0.75 times as efficient as A. What is the ratio of number of days taken by A, B and C when they work individually?

B is thrice as efficient as A and C is 0.75 times as efficient as A. What is the ratio of number of days taken by A, B and C when they work individually?

1). 4 : 1 : 3
2). 3 : 1 : 4
3). 2 : 3 : 1
4). 5 : 1 : 2

2 answers

41 vote

Answered by Guest on 2019-05-19 17:26:03 | Votes 41 | #

Let the efficiency of A be 100

Given that B is thrice as efficient as A

⇒ Efficiency of B = 300

Also given that C is 0.75 times as efficient as A

⇒ Efficiency of C = 75

From the given data,we need to find the ratio of number of days A, B and C when they work individually

∴ LCM of the 100, 300 and 75 is 300

∴ Ratio of number of days when their work individually = 300/100 : 300/300 : 300 /75

= 3 : 1 : 4

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Guest · Accepted Answer · 2019-04-29 11:17:22

Let the efficiency of A be 100

Given that B is thrice as efficient as A

⇒ Efficiency of B = 300

Also given that C is 0.75 times as efficient as A

⇒ Efficiency of C = 75

From the given data,we need to find the ratio of number of days A, B and C when they work individually

∴ LCM of the 100, 300 and 75 is 300

∴ Ratio of number of days when their work individually = 300/100 : 300/300 : 300 /75

= 3 : 1 : 4

B is thrice as efficient as A and C is 0.75 times as efficient as A. What is the ratio of number of days taken by A, B and C when they work individually?

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