3.1)
A jacket had an old price of $
$40$, but it now has a
$10$ % discount.
- a)
- Use the two-step method to find the discount and the new price.
- b)
- Use the new percentage you have to pay to find the new price in just one step.
3.2)
In February, a jacket costs $
$40$. In March, the price is increased by
$10$ %.
- a)
- Find the increase in price.
- b)
- Find the new price by adding the increase to the old price.
3.3)
A bike costs $
$400$ in May. In July, the price is reduced by
$30$ %.
- a)
- Use the two-step method to find the new price.
- b)
- Use the percentage you have to pay to find the new price.
3.4)
A jacket costs $
$40$ in November, and the price is increased by $
$5$ in December. Find the price increase in percent.
3.5)
A bike costs $
$400$ in May. In July, the store has a sale, and the price of the bike is reduced by $
$160$.
- a)
- Find the new price.
- b)
- Find the price change in percent.
- c)
- Calculate (or estimate) what percentage of the old price the new price is.
- d)
- Do you see a connection between the answers in b) and c)?
3.6)
In December, a computer costs $
$810$. The price is reduced by
$30$ % in March. Estimate how much you would have to pay for the computer in March.
3.7)
A smartphone costs $
$390$ in December. In March, the price is reduced by
$40$ %. Estimate how much the smartphone costs in March.
3.8)
In December, an armchair costs $
$620$. The price is reduced by
$70$ % in January.
- a)
- Estimate how much you have to pay for the armchair in January.
- b)
- Use a calculator to find the exact price.
3.9)
In December, a bed costs $
$540$. The price is reduced by
$60$ % in January.
- a)
- Estimate how much you have to pay for the bed in January.
- b)
- Use a calculator to find the exact price.
3.10)
A Segway costs $
$590$ in December. In January, the price is reduced by
$40$ %.
- a)
- Estimate how much you have to pay for the Segway.
- b)
- Use a calculator to find the exact price.
3.11)
A jacket costs $
$400$ in February. In March, the price is increased by
$10$ %. In April, the price from March is then reduced by
$10$ %.
- a)
- Find the increase in price between February and March, and find out what the jacket costs in March.
- b)
- Find out how much the $10$ % decrease in price between March and April was.
- c)
- Find the price of the jacket in April.
3.12)
A t-shirt costs $
$10$ in February. In March, the price is reduced by
$20$ %. In April, the March price is increased by
$20$ %.
- a)
- Find out what the discount and the new price was in March.
- b)
- Find out how much the price increased between March and April.
- c)
- Find the new price in April.
You can find the solutions here.