Respuesta :
Let x = number of problems on test
If he got 14 wrong, then x - 14 is the number correct.
[tex] \frac{x-14}{x} = .72 [/tex]
x - 14 = .72x
.28x - 14 = 0
.28x = 14
x = 50
The test consisted of 50 problems.
If he got 14 wrong, then x - 14 is the number correct.
[tex] \frac{x-14}{x} = .72 [/tex]
x - 14 = .72x
.28x - 14 = 0
.28x = 14
x = 50
The test consisted of 50 problems.
