The average of five numbers is 38. If one number is removed, then the average become 30. What is the removed number?
The average of five numbers is 38. If one number is removed, then the average become 30. What is the removed number?
पाँच संख्याओं का औसत 38 है। यदि एक संख्या को हटा दिया जाए, तो औसत 30 हो जाता है। हटाई गई संख्या क्या है?
Detailed Solution & Logic
Correct Answer:
70
Average of 5 numbers = 38
Total of 5 numbers:
$5\times38=190$
After removing one number, 4 numbers remain.
New total:
$4\times30=120$
Removed number:
190-120=70
Correct answer: 70
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