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14-02-2020
Mathematics

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The product of 4 and a number plus the product of 3 and the same number is 35. What is the number?

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rubiroj rubiroj

14-02-2020

The number is 15,
I really don’t know if there’s such a strategy to find this out, I just used trial & error:
(a*4)+(a*3)=35
(5*4)+(5*3)=35
20+15=35

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