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2021 AMC 10B Problem 6

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2021 AMC 10B Problem 6AMC 10 Step by Step

Name: Date: September 13, 2026

Statistics & Data · difficulty 2 of 5 · about 2 min · position P1-10

Ms. Blackwell gives an exam to two classes. The mean of the scores of the students in the morning class is $84$ , and the afternoon class's mean score is $70$ . The ratio of the number of students in the morning class to the number of students in the afternoon class is $\frac{ 3}{4}$ . What is the mean of the scores of all the students?

A)
$74$
B)
$75$
C)
$76$
D)
$77$
E)
$78$

2021 AMC 10B Problem 6

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