shakyaevangellina613 shakyaevangellina613

21-01-2020
Mathematics

contestada

Two number are in the ratio of 5:7.
When 3 is added to each number. The new ratio becomes 3:4. Find the numbers.

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devishri1977 devishri1977

21-01-2020

Answer:

[tex]\frac{5x+3}{7x+3}=\frac{3}{4}\\\\ 4*(5x+3)=3*(7x+3)\\\\20x+12=21x+9\\\\20x-21x=9-12\\\\-x=-3\\\\x=3\\\\5x=5*3=15\\\\7x=7*3=21\\\\[/tex]

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