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- Identify the base.
- Convert percent to fraction/decimal.
- Calculate and match options.
Correct Answer: C
Correct Answer: C
Method / Topic: Percentage
The answer uses the correct base for the percentage calculation.
Short Explanation
Detailed Explanation
Correct Answer: C
Method / Topic: Percentage
<table cellspacing="0" style="border-collapse:collapse; height:20px; width:85px">
<tbody>
<tr>
<td style="background-color:#c0e6f5; border-bottom:1px solid #44b3e1; border-left:none; border-right:none; border-top:1px solid #44b3e1; height:20px; vertical-align:top; white-space:normal; width:85px"><span style="color:#000000">The increase is 27,600−24,000=3,600. Percentage increase is calculated on the original salary: 3,600/24,000×100=15%. Using the new salary as the denominator would give an incorrect base. The calculation is checked against the conditions in the
. A useful final check is to substitute the
s involving signs, denominators, amount versus interest, and distance versus speed.</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
- Identify the base.
- Convert percent to fraction/decimal.
- Calculate and match options.
A salary increases from Rs. 24,000 to Rs. 27,600. Find the percentage increase.
Explanation
Correct Answer: C
Method / Topic: Percentage
The answer uses the correct base for the percentage calculation.
Short Explanation
Detailed Explanation
Correct Answer: C
Method / Topic: Percentage
<table cellspacing="0" style="border-collapse:collapse; height:20px; width:85px">
<tbody>
<tr>
<td style="background-color:#c0e6f5; border-bottom:1px solid #44b3e1; border-left:none; border-right:none; border-top:1px solid #44b3e1; height:20px; vertical-align:top; white-space:normal; width:85px"><span style="color:#000000">The increase is 27,600−24,000=3,600. Percentage increase is calculated on the original salary: 3,600/24,000×100=15%. Using the new salary as the denominator would give an incorrect base. The calculation is checked against the conditions in the
. A useful final check is to substitute the
s involving signs, denominators, amount versus interest, and distance versus speed.</span></td>
</tr>
</tbody>
</table>
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