Math, asked by pinkubai, 10 months ago

The average of 3 numbers is 7 and
average of first two numbers is 4.
What is the third number?
(1) 15 (2) 13 (3) 7 (4) 4​

Answers

Answered by sadashivreddy
1

Answer:

Step-by-step explanation:

Attachments:
Answered by HarshDer
2

Answer:

13

Step-by-step explanation:

average =7

x+y+z/3=7

x+y+z=21. eqn 1

x+y/2=4

x+y=8

put in eqn 1

8+z=21

z=13

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