The price of a camera is first increased by and then reduced by . What is the overall change in the price?
Answer and explanation
Correct answer: D. a decrease of 30%
- Step 1: Multiply the two factors: .
- Step 2: Compare with : the overall change is .
Answer
a decrease of 30%.
Why not the others: a decrease of 10%: it simply subtracts the two percentages, but the second change applies to the new price. an increase of 30%: the direction of the change is reversed. a decrease of 25%: the two factors are not multiplied correctly.
Practise more Percentages.
Free questions with an explanation for every one, and full timed HKDSE (Hong Kong) mock tests.
More Percentages questions
- The price of a camera is first increased by and then reduced by . What is the overall change in the price?
- The price of a camera is first increased by and then reduced by . What is the overall change in the price?
- The price of a camera is first increased by and then reduced by . What is the overall change in the price?
- The price of a camera is first increased by and then reduced by . What is the overall change in the price?
- After an increase of , the price of a bag is \220$. What was the price before the increase?
- After an increase of , the price of a bag is \264$. What was the price before the increase?