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solve using linear equation

Asked by rohitkumarh94 11th March 2010, 7:20 PM
Answered by Expert
Answer:

Dear Student

Say  Girl age = x

sister age= x/2

and  (x+4) X (x/2 +  4) = 160

x^2 /2  +16+6x=160

x^2 +12x-288=0

==> x=-6  +/- 18

Posible solution is x=12

Regards

Team

Topperlearning.com

Answered by Expert 11th March 2010, 8:16 PM
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