The average (arithmetic mean) of four numbers is 50. Two of the numbers are 30 and 60.
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The average (arithmetic mean) of four numbers is 50. Two of the numbers are 30 and 60. What is the average of the other two numbers?
A. 70
B. 65
C. 60
D. 55
E. 50
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McGraw Hills Conquering SAT Math
ISBN: 9780071493413
2nd Edition
Authors: Robert Postman, Ryan Postman
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