The average of four numbers is 72. Three of the numbers are 68, 70 and 65. Find the fourth number.
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7
Answer:
85
Step-by-step explanation:
Let fourth number be x.
==: 68 + 70 + 65 + x = 72
4
==: 68 + 70 + 65 + x = 288
==: 203 + x = 288
==: x = 85
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