PSLERoshel had a collection of stamps from Vietnam, Pakistan and Maldives. She had 198 stamps from Vietnam. 20% of her stamps were from Pakistan. She had 18 fewer stamps from Maldives than from Pakistan.
- What was the total number of stamps in Roshel's collection?
- Roshel'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)
Vietnam |
Pakistan |
Maldives |
Total |
198 |
20% |
20% - 18 |
100% |
|
+ 25% |
|
+ 25% |
|
45% |
|
125% |
Total number of stamps
= 20% + 20% - 18 + 198
= 40% + 180
100% = 40% + 180
100% - 40% = 180
60% = 180
1% = 180 ÷ 60 = 3
Total number of stamps in Roshel's collection
= 100%
= 100 x 3
= 300
(b)
Old stamp collection = 100%
New stamp collection = 100% + 25% = 125%
Percentage of stamps from Pakistan
= 20% + 25%
= 45%
Percentage of her collection from Pakistan
=
45125 x 100%
= 36%
Answer(s): (a) 300; (b) 36%