To solve this problem we can use equation. If we say that x is number of Sams pencils we can say too that Sari has 3x (because she has 3 times more) And we know that together they has 28 pencils. x+3x=28 4x=28 /:4 (divide both sides by 4) x=7 Sam has 7 pencils. We know that Sari has 3 times more so 7*3=21 -its the result.
The answer to your question is Sari has twenty-one erasers.
Sari has 21 erasers, since Sam has 7 erasers and Sari has 3 times the number Sam has. Together, they total 28 erasers. Therefore, Sari's erasers can be calculated as 3 times 7, which equals 21.
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