Math, asked by guptaaditya1442, 9 months ago

The average of the two number is 21.if any third number is added, there the average drops to 19.

Answers

Answered by subratghosh

1

Step-by-step explanation:

x+x+x/3=19

3x÷3=19

cross multiplication

19×3=3x

57=3x

57÷3=x

19=x

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