Mary is 16 years older than David, David is 13 years younger than Charlie. If the sum of their ages is 62, how old is Mary?
d= davids age
Mary=27 years old
Let's call David's age x, Mary= 16+x, David= x, and Charlie= x+13. This means that 3x+29= 62. Solving for x we get x= 11. Mary= 16+x so 16+11= 27.
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