Question 169032: John is twice as old as Tom. In three years Tom will be 11 years old. How old will John be in three years?
Answer by ankor@dixie-net.com(22740)   (Show Source):
You can put this solution on YOUR website! Let J = John's age now
Let T = Tom's age now
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Write an equation for each statement:
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"John is twice as old as Tom"
J = 2T
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" In three years Tom will be 11 years old."
T + 3 = 11
T = 11 - 3
T = 8 yrs old now
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How old will John be in three years?
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Find J's age now:
J = 2T, therefore:
J = 2(8)
J = 16 yrs old now
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In 3 yrs, John would be 19 yrs old, obviously
;
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That's pretty simple, right?
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