George put all his stamps into 20 large albums and 15 small albums. Each large album can hold 10 more stamps than each small album.
14 of his stamps were put into all the small albums and the rest were put into the large albums. How many stamps can be put into one small album?
| |
Large albums
(1) |
Small albums
(2) |
| Number |
20 |
15 |
| Value |
1 u + 10 |
1 u |
| Total value |
20 u + 200 |
15 u |
Comparing total stickers in
large albums and
small albums |
3 p |
1 p |
Total number of stamps in large albums
= 20 x (1 u + 10)
= 20 u + 200
20 u + 200 =
3 p --- (1)
15 u = 1 p --- (2)
(2)
x3
45 u =
3 p --- (3)
(3) = (1)
45 u = 20 u + 200
45 u - 20 u = 200
25 u = 200
1 u = 200 ÷ 25 = 8
Number of stamps in one small album
= 1 u
= 8
Answer(s): 8
