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2008 AMC 10A Problem 12

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2008 AMC 10A Problem 12AMC 10 Step by Step

Name: Date: September 13, 2026

Ratios, Percents & Averages · difficulty 2 of 5 · about 2 min · position P11-15

In a collection of red, blue, and green marbles, there are $25\%$ more red marbles than blue marbles, and there are $60\%$ more green marbles than red marbles. Suppose that there are $r$ red marbles. What is the total number of marbles in the collection?

A)
$2.85r$
B)
$3r$
C)
$3.4r$
D)
$3.85r$
E)
$4.25r$

2008 AMC 10A Problem 12

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