Plz mark me brainliest the answer is 86.7
hope this helps :)
Answer: Please give brainliest!!!


Answer:
y=15
x=43
(any variable can be used, I used x and y to make it easier to show)
Step-by-step explanation:
x+y=58
x-y=28
get x by its self
x=58-y
then subsitute into the other equation
(58-y)-y=28
58-2y=28
-2y=-30
y=15
sub. again
x+15=58
x=43
The answer is B because if you have 10000 hours you subtract by 3000 and it’s equals b