Question

Please answer this question quick and correctly

Answer 1

Answer:

1:10

Step-by-step explanation:

let's assume that Gauri's age is x

so his sister's age is 2x

now assume that his sister's age is y so 2x = y

and so grandmother's age is 5y

so grandmother's age is 5(2x) = 10x

so ratio of Gauri's age to grandmother's age =

x/10x

so ratio is 1:10

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