Problema Solution
You charge $7 to baby-sit for 2 hours. Last night you earned $17.50. How long did you baby-sit?
Answer provided by our tutors
let
x = the number of hours of baby-sit
the charge of baby-sit per hour is: $7/2 = $3.5 per hour
(7/2)x = 17.50
by solving we find:
x = 5 hr
click here to see the step by step solution of the equation:
you baby-sited for 5 hours.