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31 votes
31 votes
robins grandmother is 7 times older than him. in 12 years, she will be 3 times as old as him. how old is robin?

User Nedinator
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2.8k points

2 Answers

18 votes
18 votes

Answer:

6 year's old

Explanation:

Grandma is G and Robin is R

G=7R

G+12=3(R+12)

G+12=3R+36

7R+12=3R+36

7R-3R=36-12

4R=24

R=6

Robin is 6 years old

User Yasen Ivanov
by
2.7k points
12 votes
12 votes

Explanation:

the answer either maybe somebody could help

User Ooi
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3.0k points