PSLEKathy had a collection of stamps from Malta, Egypt and Greece. She had 173 stamps from Malta. 10% of her stamps were from Egypt. She had 13 fewer stamps from Greece than from Egypt.
- What was the total number of stamps in Kathy's collection?
- Kathy'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)
Malta |
Egypt |
Greece |
Total |
173 |
10% |
10% - 13 |
100% |
|
+ 25% |
|
+ 25% |
|
35% |
|
125% |
Total number of stamps
= 10% + 10% - 13 + 173
= 20% + 160
100% = 20% + 160
100% - 20% = 160
80% = 160
1% = 160 ÷ 80 = 2
Total number of stamps in Kathy's collection
= 100%
= 100 x 2
= 200
(b)
Old stamp collection = 100%
New stamp collection = 100% + 25% = 125%
Percentage of stamps from Egypt
= 10% + 25%
= 35%
Percentage of her collection from Egypt
=
35125 x 100%
= 28%
Answer(s): (a) 200; (b) 28%