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- Identify CP and SP.
- Find profit/loss amount.
- Use CP as base for percentage if asked.
Correct Answer: B
Correct Answer: B
Method / Topic: Profit and Loss
Profit or loss percentage is calculated on cost price.
Short Explanation
Detailed Explanation
Correct Answer: B
Method / Topic: Profit and Loss
<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">ANSWER:<br />
Rs. 2,700<br />
<br />
<br />
Translate the stated final condition into a percentage multiplier of the unknown original value and divide by that multiplier.<br />
<br />
CALCULATION:<br />
The inclusive bill is 108% of the base; base = 2,916 × 100 / 108 = Rs. 2,700.<br />
<br />
CHECK:<br />
8% of Rs. 2,700 is Rs. 216, producing Rs. 2,916.<br />
<br />
EXAM TIP:<br />
Reverse percentage problems require division by the remaining or increased factor, not simple addition or subtraction.<br />
<br />
<br />
Do not calculate the stated rate on the final value unless the
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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 CP and SP.
- Find profit/loss amount.
- Use CP as base for percentage if asked.
A hotel bill including 8% service tax is Rs. 2,916. What was the bill amount before tax?
Explanation
Correct Answer: B
Method / Topic: Profit and Loss
Profit or loss percentage is calculated on cost price.
Short Explanation
Detailed Explanation
Correct Answer: B
Method / Topic: Profit and Loss
<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">ANSWER:<br />
Rs. 2,700<br />
<br />
<br />
Translate the stated final condition into a percentage multiplier of the unknown original value and divide by that multiplier.<br />
<br />
CALCULATION:<br />
The inclusive bill is 108% of the base; base = 2,916 × 100 / 108 = Rs. 2,700.<br />
<br />
CHECK:<br />
8% of Rs. 2,700 is Rs. 216, producing Rs. 2,916.<br />
<br />
EXAM TIP:<br />
Reverse percentage problems require division by the remaining or increased factor, not simple addition or subtraction.<br />
<br />
<br />
Do not calculate the stated rate on the final value unless the
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