Average of three no is 7 and that of first two no is 4 find the third

1.	Average of three no is 7 and that of first two no is 4 find the third one
Answer» Answer: 13 Step-by-step explanation: The average of three numbers is 7 and that is of first two numbers is 4, then what is the third NUMBER? [A]15 [B]13 [C]7 [D]4 13 The SUM of three numbers is 7 \times 3 = 21, and the sum of first two numbers is 2 \times 4 = 8 Then the third number is 21 – 8 = 13. Hence option [B] is the right answer.

Average of three no is 7 and that of first two no is 4 find the third one

Answer»

Answer:

Step-by-step explanation:

The average of three numbers is 7 and that is of first two numbers is 4, then what is the third NUMBER?

[A]15

[B]13

[C]7

[D]4

The SUM of three numbers is 7 \times 3 = 21,

and the sum of first two numbers is 2 \times 4 = 8

Then the third number is 21 – 8 = 13.

Hence option [B] is the right answer.

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Average of three no is 7 and that of first two no is 4 find the third one

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