Percentage P6 2009 SA2 P2 Rulang Q5

5. Alice and Nelly had $520 altogether. Alice spent 30% of her money while Nelly spent $180. Each of them then had the same amount of money left. How much did Nelly have at first?

A [ ][ ][ ][ ][ ][ ][ ][S][S][S] )

N [ ][ ][ ][ ][ ][ ][ ][$180]    ) $520

17 u -- > 520 – 180 = 340

1 u -- > 340 ÷ 17 = 20

7 u -- > 7 x 20 = 140

140 + 180 = $320

Percentage P6 2009 SA2 P2 Rulang Q10

10. Books in 4 different languages are found in a school library as shown in the bar graph below. Find the percentage of Chinese books in the library. Round off your answer to 2 decimal places.

200 + 450 + 250 + 150 = 1050

450/1050 x 100% = 42.857%

                          ≈ 42.86% (rounded off to 2 decimal places)

The percentage of Chinese books in the library is 42.86%.

Percentage P6 2009 SA2 P2 Rulang Q16

16. Paul earned 20% more money than Ramli. Steve earned 40% less money than Paul. When Steve worked overtime and earned an additional $384, he would have twice as much money as Ramli. How much did the three men earn altogether if Steve had not worked overtime?

R -- > 100%

P -- > 120%

S -- >60% x 120% = 72%

200 – 72 = 128

100 + 120 + 72 = 292

128% -- > $384

1% -- > 384 ÷ 128 = 3

292% à 292 x 3 = $876

The three men earned $876.