PSLERaeann had a collection of stamps from Denmark, Norway and Pakistan. She had 150 stamps from Denmark. 40% of her stamps were from Norway. She had 30 fewer stamps from Pakistan than from Norway.
- What was the total number of stamps in Raeann's collection?
- Raeann's aunt gave her some stamps from Norway. Her total collection increased by 25%. What percentage of her collection was from Norway after that?
(a)
Denmark |
Norway |
Pakistan |
Total |
150 |
40% |
40% - 30 |
100% |
|
+ 25% |
|
+ 25% |
|
65% |
|
125% |
Total number of stamps
= 40% + 40% - 30 + 150
= 80% + 120
100% = 80% + 120
100% - 80% = 120
20% = 120
1% = 120 ÷ 20 = 6
Total number of stamps in Raeann's collection
= 100%
= 100 x 6
= 600
(b)
Old stamp collection = 100%
New stamp collection = 100% + 25% = 125%
Percentage of stamps from Norway
= 40% + 25%
= 65%
Percentage of her collection from Norway
=
65125 x 100%
= 52%
Answer(s): (a) 600; (b) 52%