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In Mathematics / Middle School | 2014-09-23

Sari has 3 times as many pencil erasers as Sam. Together, they have 28 erasers. How many erasers does Sari have?

Asked by Anonymous

Answer (3)

she has 25 erasers. 28 - 3 ----- 25

Answered by Melodylopez499 | 2024-06-10

Let
x--------> amount of erasers that Sari has
y--------> amount of erasers that Sam has
we know that
x = 3 y -------> equation 1
x + y = 28 -----> equation 2
Substitute equation 1 in equation 2
[ 3 y ] + y = 28 4 y = 28 y = 28/4 y = 7
find the value of x
x = 3 y x = 3 ∗ 7 x = 21
therefore
the answer is
Sari has 21 erasers

Answered by calculista | 2024-06-11

Sam has 7 erasers, and since Sari has three times as many, she has 21 erasers. The total number of erasers they have together is 28, as given in the problem. This solution is found using basic algebraic equations.
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Answered by calculista | 2024-09-03

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