SAT Math Practice Question #38614 - SATify | SATify
#38614
applications
linear
medium
90 sec
A certain type of radioactive isotope decays at a constant rate. After 3 days, 80 grams of the isotope remain. After 7 days, 60 grams remain. How many grams of the isotope were initially present?
• 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.
