Question

19. 15 men work 8 hours a day to complete a
piece of work in 25 days. How many days will
be taken by 12 men for doing a similar
assignment working 10 hours a day?
A. 25 days
B. 23 days
C. 20 days
D. 24 days​

Answer 1

Step-by-step explanation:

Using direct proportion method

15 men do work in 20 days

Therefore 25 men do work in 15∗

25

20

Answer 2

the answer is option (a). 25 days.

\sum\limits_{i=1}^n x_i = x_1 + x_2 + \dots + x_n

i = index of summation

n = upper limit of summation