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20-01-2021
Mathematics

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Tim’s age is nine more than his sister, Jill. Twice his age added to twice Jill’s age is 330.

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20-01-2021

Answer:

jill age is 78 and tim's age is 87

Step-by-step explanation:

let jill age be x then, tim's age is 9+x

by the question,

2(9+x) + 2x = 330

or,18 + 2x + 2x = 330

or,4x = 330-18

or, x = 312÷4

x = 78

9+x= 9+78=87

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