To find the average of three numbers, you add them together and then divide by the total number of values. In this case, the sum of 135, 375, and 450 is 960. Dividing 960 by 3 gives you an average of 320. Therefore, the average of 135, 375, and 450 is 320.
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Greatest Common Divisor (GCD) for 135 450 is 45.
45x3=135 45x10=450 3 is a the smallest (prime) number that is a factor of 135 and 450 so the greatest common divisor is 45.
135
$450 minus 30% is 315
Average = (45+26+39+450)/4 = 560/4 = 140.