Question

give the answer of the following question​

Answer 1

Answer:

Age of Vivek = 15

Age of Kishor = 10

Step-by-step explanation:

Let age of Vivek be x

Let age of Kishor be y

x=y+5 ---(1)

1/x + 1/y = 1/6

Substituting value of x in (2)

1/y+5 + 1/y = 1/6

2y+5/(y)(y+5) = 1/6

2y+5/y^2+5y = 1/6

y^2+5y=12y+30

y^2+5y-12y-30=0

y^2-7y-30=0

y^2-10y+3y-30=0

y(y-10)+3(y-10)=0

(y-10)(y+3) = 0

y = 10     {y cannot be -3 as age cannot be negative}

x = 10+5 = 15

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