Question

A is 30% more efficient than B and able to complete the work 30 days less then B. In how many days A alone can complete the work?​

Answer 1

A is 30% more efficient than B. How much time will they, working together, take to complete a job which A alone could have done in 23 days? Explanation: Ratio of times taken by A and B = 100 : 130 = 10 : 13

Step-by-step explanation:

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Answer 2

Answer:

Explanation:

Ratio of times taken by A and B = 100 : 130 = 10 : 13.

Suppose B takes x days to do the work.

Then, 10 : 13 :: 23 : x     =>     x =  (  23 x 13  )      =>     x =  299  .

10  10

A's 1 day's work =  1  ;

23

B's 1 day's work =  10  .

299

(A + B)'s 1 day's work =  (  1  +  10  )  =  23  =  1  .

23  299  299  13

Therefore, A and B together can complete the work in 13 days

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