alonso032499 alonso032499
  • 25-06-2017
  • Mathematics
contestada

Jack is 2 times as old as Lacy. 7 years from now the sum of their ages will be 35 . How old are they now?

Respuesta :

majdiShokri
majdiShokri majdiShokri
  • 25-06-2017
Assume the old of Jack is X and the old of Lacy is Y 
so ... 
do the mathematical model ...
.
X=2Y
(X+7)+(Y+7)= 35 
-
THEN 
Solve the equation 
y= 7 
x = 14 
Answer Link

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