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2007 AMC 10B Problem 14

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2007 AMC 10B Problem 14AMC 10 Step by Step

Name: Date: September 13, 2026

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

Some boys and girls are having a car wash to raise money for a class trip to China. Initially $40\%$ of the group are girls. Shortly thereafter two girls leave and two boys arrive, and then $30\%$ of the group are girls. How many girls were initially in the group?

A)
$4$
B)
$6$
C)
$8$
D)
$10$
E)
$12$

2007 AMC 10B Problem 14

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