Adam has stickers in 4 colours.
49 of the stickers are blue.
The rest of the stickers are red, green and yellow in the ratio of 3 : 4 : 5.
If there are 140 more green stickers than red stickers,
how many blue stickers are there?
Blue |
Red |
Green |
Yellow |
4 x 12 |
5 x 12 |
|
3 x 5 |
4 x 5 |
5 x 5 |
48 u |
15 u |
20 u |
25 u |
The number of blue, red and green stickers is the combined repeated identity.
Make the number of blue, red and green stickers the same using the LCM of 5 and 12.
LCM of 5 and 12 = 60
Number of more green stickers than red stickers
= 20 u - 15 u
= 5 u
5 u = 140
1 u = 140 ÷ 5 = 28
Number of blue stickers
= 48 u
= 48 x 28
= 1344
Answer(s): 1344