SOLUTION: Sam is twice as old as Mary and Mary is 5 years older than her sister Kate. The sum of all their ages is 31. Find the age of each one

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Question 1114975: Sam is twice as old as Mary and Mary is 5 years older than her sister Kate. The sum of all their ages is 31. Find the age of each one
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Sam        2(k+5)
Mary       k+5
Kate       k
TOTAL      31


4k%2B15=31
4k=16
k=4
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