200
Gissel had 18 nickels. She bought a candy bar for 75¢. How much money does Gissel have left?
a. 105¢, because 18 × 10 = 180 and 180 – 75 = 105
b. 52¢, because 18 + 5 = 23 and 75 – 23 = 52
c. 15¢, because 18 × 5 = 90 and 90 – 75 = 15
d. 47¢, because 18 + 10 = 28 and 75 – 28 = 47
15¢, because 18 × 5 = 90 and 90 – 75 = 15