Question

A and b can do a piece of work in 4 days, while c and d can do the same work in 12 days. In how many days will a, b, c and d do it together?

Answer 1

Please see the attachment

Answer 2

They can do it in 3 days.

Step-by-step explanation:

Since we have given that

Number of days in which A and B can do work = 4 days

Number of days in which C and D can do work = 12 days

Total work done = lcm of 4 and 12 = 12

Work done by A and B = $\dfrac{12}{4}=3$

Work done by C and D = $\dfrac{12}{12}=1$

So, Number of days A, B, C and D can do altogether is given by

$\dfrac{12}{3+1}\\\\=\dfrac{12}{4}\\\\=3$

Hence, they can do it in 3 days .

# learn more:

A and B can do a piece of work in 4 days, while C and D can do the same work in 12 days. In how many days will A, B, C and D do it together? *​

https://brainly.in/question/13245819