Math, asked by Tiziana06, 9 months ago

Amanda got a mean mark of 20 in three tests. In two of the tests she got 21 and 17. What is the mark Amanda got in the third test?

Answers

Answered by SamanwitaC
0

Step-by-step explanation:

(21+x+17)/3=20

38+x=60

x=60-38

x=22

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