Math, asked by khchaoba322, 4 hours ago

Average of four observations is22. if the first three numbers are 20,21 and 22 find the fourth observstions

Answers

Answered by jaihindsingh376

1

a is fourth observation

Step-by-step explanation:

20+21+22+a=22x4

63+a=88

a=88-63

a=25

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