percentage and fraction
to decimals
% of a quantity
Applications
Commission and SI
100

3/10

30%

100

50%

0.5

100

what percentage is 20 meters out of 100 meters?

20%

100

increase $800 by 10 %

$880.00

100

Calculate the simple interest on $600 at 11%p.a. for one year

$66.00

200

75%

3/4

200

75%

0.75

200

what percent is 40 out of 50 marks

80%

200

decrease 3 m by 37%

1.89 m

200

I was able to borrow $36 400 at 8.5% simple interest for 4 years to buy a car.  How much interest did I pay all together?

$12 376.00

300

1.2

120%

300

4/100

0.04

300

what percent is 40cm out of 2 m

20%

300

Bob bought a painting for $600 and sold it for $648.  Find the profit as a percentage of the cost

8% 

300

Find the total amount owed on a loan when simple interest  is charged on $7000 at 13.5% p.a. for 5 years.

$11 725.00

400

300%

3

400

8%

0.08

400

what is 25% of $350.00

$87.50

400

determine the size of a quantity if 28% of it is $29.12.

$104.00

400

An estate agent charge a commission of 6% on the first $15 000 of a sale and 2% on the balance of money received.  He sold a house for $135 000. Find his total commission for the sale.

$3 300.00

500

115%

23/20

500

7 1/4%

0.0725

500

6.8% of $185.00 

answer correct to the nearest cent. 

$12.58

500

Catherine raised $238.55 for the animal shelter.  If this represented 13% of all money raised that year, how much was raised in total?

$1835.00

500

Find the percentage rate of simple interest if an investment of $1 500 earns $360 interest in two years.  

12% p.a.