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Q: Brian has blue balls and red balls. Every day he loses 2 blue balls and gains 3 red balls. After 5 days the number of blue balls equals the red balls. After 9 days the red balls are twice as much as the blue balls. How many red balls did Brian have at the beginning?
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Account Manager

Interviewed at BairesDev

4.2
Oct 30, 2019

Q: Brian has blue balls and red balls. Every day he loses 2 blue balls and gains 3 red balls. After 5 days the number of blue balls equals the red balls. After 9 days the red balls are twice as much as the blue balls. How many red balls did Brian have at the beginning?

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