In a grocery store, Julia bought 2 pieces of Snickers and 3 packs of M&M's. If each piece of Snickers costs $1.5 and a pack of M&M's has the same cost as 2 Snickers, how much is Julia's change if she gave the cashier 2 $10 bills?
Two pieces of snickers cost $1.5 x 2 = $<T>multiply(1.5, 2)=3.0
One pack of M&M's costs $3 so 3 packs cost $3 x 3 = $<T>multiply(3, 3)=9
The total amount that she needs to pay is $3 + $9 = $<T>add(3, 9)=12
Julia gave the cashier $10 x 2 = $<T>multiply(10, 2)=20
So, her change is $20 - $12 = $<T>subtract(20, 12)=8
