PSLEXylia had a collection of stamps from Egypt, Vietnam and Iraq. She had 115 stamps from Egypt. 40% of her stamps were from Vietnam. She had 35 fewer stamps from Iraq than from Vietnam.
- What was the total number of stamps in Xylia's collection?
- Xylia's aunt gave her some stamps from Vietnam. Her total collection increased by 25%. What percentage of her collection was from Vietnam after that?
(a)
Egypt |
Vietnam |
Iraq |
Total |
115 |
40% |
40% - 35 |
100% |
|
+ 25% |
|
+ 25% |
|
65% |
|
125% |
Total number of stamps
= 40% + 40% - 35 + 115
= 80% + 80
100% = 80% + 80
100% - 80% = 80
20% = 80
1% = 80 ÷ 20 = 4
Total number of stamps in Xylia's collection
= 100%
= 100 x 4
= 400
(b)
Old stamp collection = 100%
New stamp collection = 100% + 25% = 125%
Percentage of stamps from Vietnam
= 40% + 25%
= 65%
Percentage of her collection from Vietnam
=
65125 x 100%
= 52%
Answer(s): (a) 400; (b) 52%