SAT Math Practice Question #36280 - SATify | SATify
#36280
rate
arithmetic
hard
120 sec
A machine starts with 75 kilograms of raw material. It uses the material at a constant rate of 2.5 kilograms every 30 minutes. If 15 kilograms of raw material remain, for how many hours has the machine been operating?
• Up to 5 characters (6 if negative). Only numbers, decimal (.), fraction (/), negative (-). • Fractions must be in lowest terms. • Mixed numbers must be converted to improper fractions.
