Question

If 3a=a+b, what are the following ratios? 2a:7b

Answer 1

Hey dear ☺️



Here your answer
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Give data is 3a= a+b

3a=a+b

So,

3a-a=b

2a=b

a/b= 1/2



$\frac{2a}{7b} = \frac{2}{7} \times \frac{a}{b} = \frac{2 \times 1}{7 \times 2} = \frac{1}{7} \\ \\ \\ your \: answer \: is \: 1:7$

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