Question

Andres works 20 hours per week at a part-time job. His original pay rate was $10.00 per hour, but he recently received a pay raise of x dollars per hour. His new total weekly pay, y, is represented by the equation y=20(10+x).

If Andres earned $210 last week, what was the amount of Andres' raise per hour?

Answer 1

X = .5

Step-by-step explanation:

10 × 20 = 200

10.5 × 20 = 210

Step-by-step explanation:

Y = 210

210 = 20(10+X)

divide both sides by 20

10.5 = 10+X

subtract 10 from both sides

.5 = X

X = .5