If the average of 10, k and 30 is 21. What is the value of k?
- 86
- 20
- 23
- None of these
Explanation
Given the average of 10, k, and 30 is 21:
(10 + k + 30) / 3 = 21
Multiply both sides by 3:
10 + k + 30 = 63
Combine constants:
40 + k = 63
Subtract 40 from both sides:
k = 23
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اس سوال کو وضاحت کے ساتھ پڑھیں
- 0
- 1
- 2
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
- 30
- 35
- 40
- 45
اس سوال کو وضاحت کے ساتھ پڑھیں
