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Rex is four times as old as Ted. If the sum of their ages is 30, how old is Ted?
Rex is four times as old as Ted. If the sum of their ages is 30, how old is Ted?
A . 5
B . 8
C . 10
D . 6
E . 12
Answer: D
Explanation:
The ratio of Rex’s age to Ted’s age is 4:1; the sum of their ages can be divided by the total number of units in this ratio, 5. This indicates that Rex is 24 and Ted is 6.
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