Bryan put all his stickers into 20 large albums and 15 small albums. Each large album can hold 15 more stickers than each small album.
13 of his stickers were put into all the small albums and the rest were put into the large albums. How many stickers can be put into one large album?
| |
Large albums
(1) |
Small albums
(2) |
| Number |
20 |
15 |
| Value |
1 u + 15 |
1 u |
| Total value |
20 u + 300 |
15 u |
Comparing total stickers in
large albums and
small albums |
2 p |
1 p |
Total number of stickers in large albums
= 20 x (1 u + 15)
= 20 u + 300
20 u + 300 =
2 p --- (1)
15 u = 1 p --- (2)
(2)
x2
30 u =
2 p --- (3)
(3) = (1)
30 u = 20 u + 300
30 u - 20 u = 300
10 u = 300
1 u = 300 ÷ 10 = 30
Number of stickers in one large album
= 1 u + 15
= 30 + 15
= 45
Answer(s): 45
