PSLEEsther had a collection of stamps from Chile, Zambia and Fiji. She had 159 stamps from Chile. 40% of her stamps were from Zambia. She had 19 fewer stamps from Fiji than from Zambia.
- What was the total number of stamps in Esther's collection?
- Esther's aunt gave her some stamps from Zambia. Her total collection increased by 25%. What percentage of her collection was from Zambia after that?
(a)
Chile |
Zambia |
Fiji |
Total |
159 |
40% |
40% - 19 |
100% |
|
+ 25% |
|
+ 25% |
|
65% |
|
125% |
Total number of stamps
= 40% + 40% - 19 + 159
= 80% + 140
100% = 80% + 140
100% - 80% = 140
20% = 140
1% = 140 ÷ 20 = 7
Total number of stamps in Esther's collection
= 100%
= 100 x 7
= 700
(b)
Old stamp collection = 100%
New stamp collection = 100% + 25% = 125%
Percentage of stamps from Zambia
= 40% + 25%
= 65%
Percentage of her collection from Zambia
=
65125 x 100%
= 52%
Answer(s): (a) 700; (b) 52%