Today, the sum of the ages of Bea and her sister is 18. What would be the sum of their ages next year?

asked Jul 3, 2017 54.8k views

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3 votes

b=bea's age

sister+b=18
next years, both grew 1
sister+1+b+1=18+1+1=20

sum is 20

Ro Yo Mi answered Jul 6, 2017

6.7k points

2 votes

Hello,

Let's assume a the age of Bea
b the age of her sister

This year: a+b=18

Next year (a+1)+(b+1)=(a+b)+(1+1)=(a+b)+2=18+2=20

Jcxavier answered Jul 8, 2017

6.6k points

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