Question

It takes 18 electricians 35 days to wire a new housing subdivision. How many days would 28 electricians require to do the same job?

Answer 1

18/35 - 28/x

Cross multiply and solve for x.

Answer 2

I got 54.(4)

but my teacher says its wrong

Answer 3

Sorry. My brain took a brief break. This is not a viable proportion.

Answer 4

I got 14
and it wrong

Answer 5

dis is inverse proportion: let w be no of days,find constant k : 18=K/35,K=630, 28=630/w,find your w

Answer 6

one electrician would take
18 * 35 = 630 days
so
28 electricians would take
630/28 = 22.5 days

Answer 7

@ Ms. Sue, you simply cannot cross multiply because it is an inverse proportion, rather it would be 630 (total days) divided by total workers (28) equaling 22.5 days. @Damon, you are right!

Answer 8

Here is the simple way:
First divide 35 by 28 which is 1.25.
Then, multiply 1.25 and 18 together.
22.5 is your answer.

Answer 9

22.5 days

Answer 10

thanks for the work

Answer 11

22.5