PSLENora had a collection of stamps from Spain, Scotland and Zambia. She had 158 stamps from Spain. 30% of her stamps were from Scotland. She had 38 fewer stamps from Zambia than from Scotland.
- What was the total number of stamps in Nora's collection?
- Nora's aunt gave her some stamps from Scotland. Her total collection increased by 25%. What percentage of her collection was from Scotland after that?
(a)
Spain |
Scotland |
Zambia |
Total |
158 |
30% |
30% - 38 |
100% |
|
+ 25% |
|
+ 25% |
|
55% |
|
125% |
Total number of stamps
= 30% + 30% - 38 + 158
= 60% + 120
100% = 60% + 120
100% - 60% = 120
40% = 120
1% = 120 ÷ 40 = 3
Total number of stamps in Nora's collection
= 100%
= 100 x 3
= 300
(b)
Old stamp collection = 100%
New stamp collection = 100% + 25% = 125%
Percentage of stamps from Scotland
= 30% + 25%
= 55%
Percentage of her collection from Scotland
=
55125 x 100%
= 44%
Answer(s): (a) 300; (b) 44%