PSLEZara had a collection of stamps from Japan, Thailand and India. She had 91 stamps from Japan. 40% of her stamps were from Thailand. She had 31 fewer stamps from India than from Thailand.
- What was the total number of stamps in Zara's collection?
- Zara's aunt gave her some stamps from Thailand. Her total collection increased by 25%. What percentage of her collection was from Thailand after that?
(a)
Japan |
Thailand |
India |
Total |
91 |
40% |
40% - 31 |
100% |
|
+ 25% |
|
+ 25% |
|
65% |
|
125% |
Total number of stamps
= 40% + 40% - 31 + 91
= 80% + 60
100% = 80% + 60
100% - 80% = 60
20% = 60
1% = 60 ÷ 20 = 3
Total number of stamps in Zara's collection
= 100%
= 100 x 3
= 300
(b)
Old stamp collection = 100%
New stamp collection = 100% + 25% = 125%
Percentage of stamps from Thailand
= 40% + 25%
= 65%
Percentage of her collection from Thailand
=
65125 x 100%
= 52%
Answer(s): (a) 300; (b) 52%