Marianne goes shopping with her friend Anneke. They pass a store with great bargains. They quickly enter.
Marianne sees a sweater for € 49.98. What will this sweater cost after the discount?
Anneke buys two pairs of jeans with a pricetag of € 51.75. What does she pay for them?
Marianne sees a blouse with a discount of 20%. The shop price is € 33.50 and she has to pay € 27.00 for it. Is the discount percentage correct?
You have deposited an amount of € 1000 into a bank account on 1 January 2009. You leave the money untouched and receive a yearly interest of %.
How much money is in your account on January 2010?
And how much on 1 January 2011?
Is the amount of interest the same every year? Why?
You get a 40% discount on a stereo set. You do need to pay 21% sales tax, however. There are two possibilities:
The shop owner first computes the discounted price and then adds the sales tax.
The shop owner first adds the sales tax to the price and then takes of the % discount.
Use a computation to show which is the most profitable for you and what the difference is.
You can buy a € 295 leather desk chair for € 200.
What is the discount percentage?
A gram box of chocolate sprinkles costs € 1.75. The producer has the following offer: 20% more for the same price.
What is your discount?
The water of the river Rhine flows into different river branches when it enters The
Netherlands.
First 65% enters the river Waal and 35% enters the Nederrijn. Just before Arnhem the
Nederrijn then splits again. There 60% of the water flows into the river Lek en 40%
into the river IJssel.
What percentage of the Rhine's water flows into the Ijssel?
What percentage of the Rhine's water flows into the North Sea via the Lek?
The Rhine's water becomes polluted in the Ruhr area by the discharge of a certain amount of coloring agents. Researchers estimate that kg of those coloring agents end up in the IJssel. How many kilograms of coloring agents were discharged?
The table contains information about the population and surface area of the Indonesian archipel in 1980. Some numbers are missing.
What is the total number of inhabitants of Indonesia in 1980? Give the number in millions.
How big was the total surface area of all Indonesian islands combined?
Compute the numbers that are missing in the table.
The population density is the number of people per km2. Which island has the largest population density?
Compute the population density of the whole of Indonesia.