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- Write average and count.
- Find total = average x count.
- Adjust total if values are added/removed/replaced.
Correct Answer: A
Correct Answer: A
Method / Topic: Average
The answer follows from total divided by number of values.
Short Explanation
Detailed Explanation
Correct Answer: A
Method / Topic: Average
<table cellspacing="0" style="border-collapse:collapse; height:20px; width:85px">
<tbody>
<tr>
<td style="border-bottom:none; border-left:none; border-right:none; border-top:none; height:20px; vertical-align:top; white-space:normal; width:85px"><span style="color:#000000">Total of six numbers=6×38=228. The five given numbers total 188, so the sixth number is 40.</span></td>
</tr>
</tbody>
</table>
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Learn + Solve: Shortcut, Trap & Fast Route Click to view shortcut, steps, and common mistake
Shortcut used, common trap, and the fastest solving route
- Write average and count.
- Find total = average x count.
- Adjust total if values are added/removed/replaced.
The average of six numbers is 38. If five of them are 31, 35, 37, 41 and 44, find the sixth number.
Explanation
Correct Answer: A
Method / Topic: Average
The answer follows from total divided by number of values.
Short Explanation
Detailed Explanation
Correct Answer: A
Method / Topic: Average
<table cellspacing="0" style="border-collapse:collapse; height:20px; width:85px">
<tbody>
<tr>
<td style="border-bottom:none; border-left:none; border-right:none; border-top:none; height:20px; vertical-align:top; white-space:normal; width:85px"><span style="color:#000000">Total of six numbers=6×38=228. The five given numbers total 188, so the sixth number is 40.</span></td>
</tr>
</tbody>
</table>
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