Question

There were an equal number of red balls and blue balls in a basket. After 20 red balls and 28 blue balls
are removed from the basket, the ratio of the number of red balls to the number of blue balls becomes
5:3. Find the total number of red balls in the basket.
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Answer 1

Answer:

let the number of balls be 5x and 3x according to the question

5x-20 = 3x-28

5x-3x= 28-20

2x = 8

x = 8÷2

x = 4