0.188 because the 5 in 0.1875 rounds up
You just divided 1/2 (.5) by 10 which is .05. so the answer is 0.05 gallons
4x-3y=17......(1)
5x+4y=60......(2)
Multiply equation (1) by 4 and equation (2) by 3:-
16x - 12y = 68
15x + 12y = 180
Adding these 2 equations:_
31x = 248
x = 248/31 = 8
Now substitute x = 8 in equation (1):-
4(8) - 3y = 17
32-3y = 17
-3y = -15
y = -15/-3 = 5
So solution is x=8,y=5
Just do 8 divided by two and then add 25 to that and you get that answer which is $29
