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Today, the sum of the ages of Bea and her sister is 18. What would be the sum of their ages next year?
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Today, the sum of the ages of Bea and her sister is 18. What would be the sum of their ages next year?
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Jul 3, 2017
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Today, the sum of the ages of Bea and her sister is 18. What would be the sum of their ages next year?
Mathematics
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Mark R Lindsey
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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
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Jul 6, 2017
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Ro Yo Mi
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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
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Jul 8, 2017
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