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Karen is twice as old as lori. Three years from now, the sum of their ages will be 42. How old is karen?

Sagot :

Let x be age of Iori and
2x would then be Karen's age (twice as old as Iori), then,
(x + 2x) + 6* = 42 ( 6 because three years times two = 6 (of course they both get older three years from now))
3x +  6 = 42
3x = 42 - 6
3x = 36
x = 36/3
x = 12

Substituting, we'll have;
Iori = 12
karen = 24

Have fun :p




x=Iori
2x=Karen

x+3+2x+3=42
3x+6=42
3x=36
x=12

Iori is 12, Karen is 24