The average of four numbers is 98. If three of those numbers are 86, 87, and 91, what is the fourth number?
2 answers:
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86 + 87 + 91 = 264
98 x 4 = 392
392 - 264 = 128
The fourth number is 128
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Answer:
128
Step-by-step explanation:
86 plus 87 plus 91 =264
You have to get 98 times 4 which is 392
Then;
392-264, which is 128, which is the answer (the fourth number)
So;
86+87+91+128 = 392 divided by 4 (the number of numbers there is) which equals 98!
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