Answer:
x = 18
Step-by-step explanation:
25 + 20 = 45
Proportions:
45 ⇒ 50
20 ⇒ x
x = 45*20/50
see the figure below to better understand the problem
we have that
So 24 hours each month times 12 would be 288 hours of working out of one year.
Hope this helps!
x
y
−
4
0
3
1
2
