Question

11. The average of three numbers 70, *7 and 5* is 57.
If * represents the same digit, then it must be
(a) 3
(d) 7
(b) 6
(c) 4​

Answer 1

Answer:

(70+*7+5*)/3=57 (70+*7+5*)=171 *7+5*=101 *=4

Answer 2

Answer:

The correct answer to this question is 8.4 ≈ 8 (after round off)

Step-by-step explanation:

Average of the three numbers 70, x7 and 5x is 57

average = sum of numbers/total numbers

57 = (70 + x7 + 5x) / 3

57*3 = 70 + x7 + 5x

171 = 70 + 12x

101 = 12x

101/12 = x

8.41 = x

∴ Hence, the value of x is 8.41 (≈ 8)

To learn more about average from the given link

https://brainly.in/question/143035

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CORRECT QUESTION:

The average of three numbers 70, *7 and 5* is 57.

If * represents the same digit, then it must be

(a) 3

(d) 7

(b) 6

(c) 4​

(e) 8

CORRECT ANSWER:

(e) 8