Which answer best explains how to solve this problem?
mia said, “i’m thinking of a number. divide this number by 2. add 15 to the quotient. the answer is 24.” what is mia’s number?
a.
work backward
start with 24.
multiply by 2 and get 48.
subtract 15 and get 33.
mia started with the number 33.
b.
work backward
start with 24.
subtract 15 and get 9.
multiply by 2 and get 18.
mia started with the number 18.
c.
work backward
start with 15.
multiply by 2 and get 30.
subtract 24 and get 6.
mia started with the number 6.