Susan has nine hamsters. In order to feed each hamster 4 blocks of food each day, how much food must she buy for 7 days?  Choose the correct option:  A) 210  B) 228  C) 243  D) 252  E) 271
4 blocks of food per day multiplied by 9 hamsters = 36 blocks per day. 36 multiplied by 7 days = 252 blocks of food, hence answer : 252.
<result>D</result>
Susan has nine hamsters. In order to feed each hamster 4 blocks of food each day, how much food must she buy for 7 days?