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#38548

arithmetic mean

data analysis

medium

60 sec

In a school, there are two classes taking the same math test. Class A has 10 students, and their average score on the test was 85. Class B has 15 students, and their average score on the test was 90. What is the overall average score for all students in both classes combined?

• Up to 5 characters (6 if negative). Only numbers, decimal (.), fraction (/), negative (-).
• Fractions must be in lowest terms.
• Mixed numbers must be converted to improper fractions.