Question

HELP Write a proportion that could be used to solve for each variable. Then solve. 16 walls in 40 hours 3 walls in h hours a. 16/40 = h/3; h = 1.2 c. 16/h = 3/40; h = 213.3 b. 16/40 = 3/h; h = 7.5 d. 16/40 = 3/h; h = 8.5

Answer 1

The proportion that could be used to solve for the variable is:

$\frac{16}{40} = \frac{3}{h}$

h = 7.5

Solution:

Given that,

16 walls in 40 hours 3 walls in h hours

Which means,

16 walls build in 40 hours

Then 3 walls in h hours

We have to write a proportion

The number of walls and the number of hours are proportion

Therefore, we get,

$\frac{16}{40} = \frac{3}{h}$

Cross multiply and solve for h

$16 \times h = 3 \times 40\\\\16h = 120\\\\h = \frac{120}{16}\\\\h = 7.5$

Thus the proportion is solved