Three-fourth of the students in the class have an average lQ of 120 and the rest have an average IQ of 160. What is the average IQ in the class?

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter7: Percents
Section: Chapter Questions
Problem 18PTTS
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Three-fourth of the students in the class have an average IQ of
120 and the rest have an average IQ of 160.
What is the average IQ in the class?
Transcribed Image Text:Three-fourth of the students in the class have an average IQ of 120 and the rest have an average IQ of 160. What is the average IQ in the class?
The sum of two integers multiplied by the sum of their squares is
3667,
and their difference multiplied by the difference of their squares is
475.
Find the product of the two numbers
Transcribed Image Text:The sum of two integers multiplied by the sum of their squares is 3667, and their difference multiplied by the difference of their squares is 475. Find the product of the two numbers
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