PSLEXuan had a collection of stamps from Japan, Pakistan and Malta. She had 158 stamps from Japan. 40% of her stamps were from Pakistan. She had 18 fewer stamps from Malta than from Pakistan.
- What was the total number of stamps in Xuan's collection?
- Xuan's aunt gave her some stamps from Pakistan. Her total collection increased by 25%. What percentage of her collection was from Pakistan after that?
(a)
Japan |
Pakistan |
Malta |
Total |
158 |
40% |
40% - 18 |
100% |
|
+ 25% |
|
+ 25% |
|
65% |
|
125% |
Total number of stamps
= 40% + 40% - 18 + 158
= 80% + 140
100% = 80% + 140
100% - 80% = 140
20% = 140
1% = 140 ÷ 20 = 7
Total number of stamps in Xuan's collection
= 100%
= 100 x 7
= 700
(b)
Old stamp collection = 100%
New stamp collection = 100% + 25% = 125%
Percentage of stamps from Pakistan
= 40% + 25%
= 65%
Percentage of her collection from Pakistan
=
65125 x 100%
= 52%
Answer(s): (a) 700; (b) 52%