Problema Solution
Sean is raising money for his school by doing push-ups. His mom agrees to donate $15 plus $1.50 for each push-up after he does twenty. How many push-ups (total) must Sean do if he wants his mother to donate $30
Answer provided by our tutors
x, total push-ups
30 = 15 + (1.50)(x-20)
30-15 = 1.5x - 30
15 + 30 = 1.5x
1.5x/1.5 = 45/1.5
x = 30