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Jahir has 15 red balls; he gives Sami 3 balls. Sami now has twice the number of balls Jahir has left. How many balls did Sami have at the beginning?

Jahir has 15 red balls; he gives Sami 3 balls. Sami now has twice the number of balls Jahir has left. How many balls did Sami have at the beginning? Correct Answer 21

ধরি, sami র বলের সংখ্যা x ( 15 - 3) ×2 = x + 3 24 = x + 3 x = 24 - 3 x = 21

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