PSLEBetty had a collection of stamps from Pakistan, Greece and Oman. She had 134 stamps from Pakistan. 40% of her stamps were from Greece. She had 34 fewer stamps from Oman than from Greece.
- What was the total number of stamps in Betty's collection?
- Betty's aunt gave her some stamps from Greece. Her total collection increased by 25%. What percentage of her collection was from Greece after that?
(a)
Pakistan |
Greece |
Oman |
Total |
134 |
40% |
40% - 34 |
100% |
|
+ 25% |
|
+ 25% |
|
65% |
|
125% |
Total number of stamps
= 40% + 40% - 34 + 134
= 80% + 100
100% = 80% + 100
100% - 80% = 100
20% = 100
1% = 100 ÷ 20 = 5
Total number of stamps in Betty's collection
= 100%
= 100 x 5
= 500
(b)
Old stamp collection = 100%
New stamp collection = 100% + 25% = 125%
Percentage of stamps from Greece
= 40% + 25%
= 65%
Percentage of her collection from Greece
=
65125 x 100%
= 52%
Answer(s): (a) 500; (b) 52%