armymade armymade

16-02-2017
Mathematics

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If the sum of two numbers is 280, and their ratio is 7:3, then the smaller number is?

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apologiabiology apologiabiology

22-02-2017

7+3=10

10 units=280
divide by 10
1unit=28

smaller is 3 units
1unit=28
times 3 both sides
3unit=84

smaller is 84

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