Question

The product of the ages of two sister is 104. The difference between their ages is 5. find thier ages
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Answer 1

let the number be x and x+5

atq

X×(X+5)=104

X^2+5x=104

X^2+5X-104=0

X^2+13X-8X-104=0

X(X+13)-5(X+13)=0

(X-5)(X+13)=0

X-5=0

X=5

OR

X+13=0

X=-13

Answer 2

ANS ]

Age is always +ve

so, age of 1 st sis is 13

x-y = 5 ......(1)

put x= 13

so,

-y=5-13

y=8

age of another sis is 8