SOLUTION: . Mary is 8 years old; Peter is 10. In 4 years' time John will be as old as Mary and Peter together. How old is John now? *

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Question 1176760: . Mary is 8 years old; Peter is 10. In 4 years' time John will be as old as Mary and Peter together. How old is John now? *
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
Mary, 8
Peter, 10
John, j

j%2B4=%288%2B4%29%2B%2810%2B4%29
.
.