PSLEAnna had a collection of stamps from Finland, Greece and Zambia. She had 183 stamps from Finland. 40% of her stamps were from Greece. She had 23 fewer stamps from Zambia than from Greece.
- What was the total number of stamps in Anna's collection?
- Anna's aunt gave her some stamps from Greece. Her total collection increased by 25%. What percentage of her collection was from Greece after that?
(a)
Finland |
Greece |
Zambia |
Total |
183 |
40% |
40% - 23 |
100% |
|
+ 25% |
|
+ 25% |
|
65% |
|
125% |
Total number of stamps
= 40% + 40% - 23 + 183
= 80% + 160
100% = 80% + 160
100% - 80% = 160
20% = 160
1% = 160 ÷ 20 = 8
Total number of stamps in Anna's collection
= 100%
= 100 x 8
= 800
(b)
Old stamp collection = 100%
New stamp collection = 100% + 25% = 125%
Percentage of stamps from Greece
= 40% + 25%
= 65%
Percentage of her collection from Greece
=
65125 x 100%
= 52%
Answer(s): (a) 800; (b) 52%