Question

A girl is twice or oddas her sister .four year hence,the product of their age will be 160

Answer 1

Hi Friend !!!

Here is ur answer !!!

Let the age of her sister be x and her sister age = 2x

4 year hence

her age = 2x+4

Her sister age = x+4


x+4(2x+4) = 160

2x²+8x+4x+16 = 160

2x²+12x +16-160 = 0

2x²+12x -144 =0

x²+6x-72 = 0

x²+12x-6x -72 = 0

x(x+12)-6(x+12) = 0

(x-6)(x+12) = 0

x = 6

So her sister age = 6

her age = 2(6) = 12


Hope it helps u : )