PSLENicole had a collection of stamps from Mexico, Canada and Chile. She had 177 stamps from Mexico. 30% of her stamps were from Canada. She had 17 fewer stamps from Chile than from Canada.
- What was the total number of stamps in Nicole's collection?
- Nicole's aunt gave her some stamps from Canada. Her total collection increased by 25%. What percentage of her collection was from Canada after that?
(a)
Mexico |
Canada |
Chile |
Total |
177 |
30% |
30% - 17 |
100% |
|
+ 25% |
|
+ 25% |
|
55% |
|
125% |
Total number of stamps
= 30% + 30% - 17 + 177
= 60% + 160
100% = 60% + 160
100% - 60% = 160
40% = 160
1% = 160 ÷ 40 = 4
Total number of stamps in Nicole's collection
= 100%
= 100 x 4
= 400
(b)
Old stamp collection = 100%
New stamp collection = 100% + 25% = 125%
Percentage of stamps from Canada
= 30% + 25%
= 55%
Percentage of her collection from Canada
=
55125 x 100%
= 44%
Answer(s): (a) 400; (b) 44%