Q: What is the average of 80 90 85 and 71?

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61 + 73 + 71 + 80 + 87 + 90 + 90 + 90 + 87 + 83 + 73 + 63 = 948 / 12 = 79 The average of the numbers is therefore 79.

Equation: 90 + 85+ 80+76 = 331

90.

90

90

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80 75 + 70 + 80 = 225 80 + 85 + 90 = 255 225 + 255 = 480 six numbers so 480 / 6 = 80

WOrlwide Average, about 80, U.S Average 90, European Average 85.

61 + 73 + 71 + 80 + 87 + 90 + 90 + 90 + 87 + 83 + 73 + 63 = 948 / 12 = 79 The average of the numbers is therefore 79.

Equation: 90 + 85+ 80+76 = 331

90.

80

82.

The Greatest Common Factor of 80, 85, 90: 5

(80 + 90) / 2 = 85Therefore, the number between 80 and 90 is 85.

90

90

average of 71%, 84% and 90% = 81.67% = (71% + 84% + 90%)/3 = 245%/3 = 81.67%