Lower Elementary:
Question: Jack's suitcase can hold twice as much as Wendy's suitcase. Wendy's suitcase can hold twice as much as Danny's suitcase. Danny's suitcase is exactly big enough to hold 12 sweaters. How many sweaters can fit inside all three suitcases?
Answer: 84 sweaters
Solution: Since Danny's suitcase holds 12 sweaters, Wendy's holds 12 + 12 = 24 sweaters. Since Wendy's suitcase holds 24 sweaters, Jack's suitcase holds 24 + 24 = 48 sweaters. So, all three sweaters can hold 12 + 24 + 48 = 84 sweaters.
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