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CBSE Class 10 Answered

solve using linear equation
Asked by rohitkumarh94 | 11 Mar, 2010, 07:20: PM
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 | 11 Mar, 2010, 08:16: PM
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