Knock out the false percentage lines
Read exercise and reference answers
- Questions
- Question
- Three of these lines about a 25 percent rise in the price of rice are false.
- Choices
- Item
- Cut consumption by 20 percent
- Correct
- Yes
- Explanation
- The cut is 25 over 125, because the base is the raised price.
- Item
- Cut consumption by 25 percent
- Explanation
- Cutting that far pushes the bill below what it used to be.
- Item
- Cut consumption by 30 percent
- Explanation
- The same quantity at a higher price makes the bill rise.
- Item
- Keep consumption unchanged
- Question
- Three of these lines about a 40 percent markup sold at a 25 percent discount are false.
- Choices
- Item
- A profit of 5 percent
- Correct
- Yes
- Explanation
- The discount sits on the marked price, not on the cost price.
- Item
- A profit of 15 percent
- Explanation
- They cancel only near a 28.6 percent discount on this markup.
- Item
- Neither profit nor loss
- Explanation
- Selling at 105 against a cost of 100 is a gain, not a loss.
- Item
- A loss of 10 percent
- Instructions
- Tap the three wrong lines in each set about percentage changes, leaving the one that holds.
_Source: Qallery verified question bank, BHEL Engineer Trainee, topic Percentages_