Question

3 men or 7 women can do a piece of work in 64 days. How many days will be required by 7 men and 5 women to do a piece of work thrice as large

Answer 1

Step-by-step explanation:

3M=7W=>7/3W=M

7/3W=64

W=64 X3/7

=>7M+5W=7 X 7/3W+5W

=49/3W+5W

=64/3W

64/3W=64/3 X 64X3/7=4096/7

Answer 2

For thrice piece of work is $21\times 3=63\ days$ is required.

Step-by-step explanation:

Since we have given that

3 men or 7 women ,

Number of days = 64

If 7 men and 5 women are there,

We need to find the number of days,

$\dfrac{64}{\dfrac{7}{3}+\dfrac{5}{7}}\\\\=\dfrac{64\times 21}{49+15}\\\\=\dfrac{1344}{64}\\\\=21\ days$

Hence, for thrice piece of work is $21\times 3=63\ days$ is required.

# learn more:

If 2 men and 7 boys do a piece of

work in 14 days while 3 men and 8

boys do the same piece of work in

11 days, then in how many days

will 8 men and 6 boys do thrice of

that work?

(A) 11 (B) 21 (C) 31 (D) 41​

https://brainly.in/question/12220691