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#37743

word problem

data analysis

average

arithmetic mean

statistics

medium

120 sec

Calculator OK

In a school, Class A has 20 students, and their average score on a history exam was 80. Class B has 30 students. When the scores of both classes are combined, the overall average score for all 50 students is 86. What was the average score for Class B?

• 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.