PSLELynn had a collection of stamps from Zambia, Oman and India. She had 146 stamps from Zambia. 20% of her stamps were from Oman. She had 26 fewer stamps from India than from Oman.
- What was the total number of stamps in Lynn's collection?
- Lynn's aunt gave her some stamps from Oman. Her total collection increased by 25%. What percentage of her collection was from Oman after that?
(a)
Zambia |
Oman |
India |
Total |
146 |
20% |
20% - 26 |
100% |
|
+ 25% |
|
+ 25% |
|
45% |
|
125% |
Total number of stamps
= 20% + 20% - 26 + 146
= 40% + 120
100% = 40% + 120
100% - 40% = 120
60% = 120
1% = 120 ÷ 60 = 2
Total number of stamps in Lynn's collection
= 100%
= 100 x 2
= 200
(b)
Old stamp collection = 100%
New stamp collection = 100% + 25% = 125%
Percentage of stamps from Oman
= 20% + 25%
= 45%
Percentage of her collection from Oman
=
45125 x 100%
= 36%
Answer(s): (a) 200; (b) 36%