SOLUTION: Mary is four times as old as John. The difference of their ages is 42. How old is each.

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Question 839861: Mary is four times as old as John. The difference of their ages is 42. How old is each.
Found 2 solutions by ewatrrr, edjones:
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

Mary is four times as old as John's age highlight_green%28x%29

The difference of their age is 42.

 Mary - John = 42

*** 4x - x = 42

    3x = 42

    x 14, John's age.   Mary is 56.    4%2A14

CHECKING our answer***

56-14 = 42

Wish You the Best in your Studies.

Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
m=4j
m-j=42
.
4j-j=42
3j=42
j=14
m=56
.
Ed