Question

1. After 5 years, Gauri's
age will be twice of Nandu's
age. Write the expression for Gauri's
present age. If Nandu is 5 years old, how old is Gauri?
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Answer 1

Answer:

gauri is five years old

Step-by-step explanation:

Gori age of 5 years old because if Nandu is five years old now then after 5 years only Gori will be twice of Nandu age

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Answer 2

Answer:

15 years

Step-by-step explanation:

Let present age of Gauri be M years and present age of Nandu be N years.

After 5 years, Gauri's age will be twice of Nandu's age.

Age of Gauri after 5 years  = (M + 5)

Age of Nandu after 5 years = (N + 5)

M+5=2(N+5)

M+5=2N+10

5-10=2N-M

-5=2N-M

M=2N+5------(1)

But we have given that present age of Nandu is 5 years.

So,  N = 5

Substitute value of N = 5 in (eq 1)

Now,

M=2(5)+5

M=10+5

M=15

therefore gauri is 15 years old