PSLEJoelle had a collection of stamps from Mexico, Egypt and Australia. She had 148 stamps from Mexico. 40% of her stamps were from Egypt. She had 48 fewer stamps from Australia than from Egypt.
- What was the total number of stamps in Joelle's collection?
- Joelle's aunt gave her some stamps from Egypt. Her total collection increased by 25%. What percentage of her collection was from Egypt after that?
(a)
Mexico |
Egypt |
Australia |
Total |
148 |
40% |
40% - 48 |
100% |
|
+ 25% |
|
+ 25% |
|
65% |
|
125% |
Total number of stamps
= 40% + 40% - 48 + 148
= 80% + 100
100% = 80% + 100
100% - 80% = 100
20% = 100
1% = 100 ÷ 20 = 5
Total number of stamps in Joelle's collection
= 100%
= 100 x 5
= 500
(b)
Old stamp collection = 100%
New stamp collection = 100% + 25% = 125%
Percentage of stamps from Egypt
= 40% + 25%
= 65%
Percentage of her collection from Egypt
=
65125 x 100%
= 52%
Answer(s): (a) 500; (b) 52%