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Mathematics

Answered

bob and rob in ratio 3:4 and their age 4 years ago was 5:7 find their ages
please answer (asap)
thnx pls do in one variable

Answer :

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Answer:

Present Day:

Bob:Rob:Difference

3 : 4 : 1

6 : 12 : 2

4 years ago:

Bob:Rob:Difference

5 : 7 : 2

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