Math Weekly for Term 3 Week 6 (%)

Those who have the repeated question for Questions 7 and 8, please add this simple question in:

Ali has 336 stamps. 42 of them are local stamps and the rest are foreign stamps. What percentage of the stamps are foreign stamps?

There is also a mistake in the following question:

"Jerry bought a car in 2007. The value of the car decreased by 20% in 2008. In 2007, the value of the car was $79 200. This was 90% of its value in 2008. How much did he buy the car at?"

It should be:

"Jerry bought a car in 2007. The value of the car decreased by 20% in 2008. In 2009, the value of the car was $79 200. This was 90% of its value in 2008. How much did he buy the car at?"

Posted by Mr Wan