Adam has stickers in 4 colours.
38 of the stickers are yellow.
The rest of the stickers are red, blue and green in the ratio of 4 : 5 : 3.
If there are 10 more blue stickers than red stickers,
how many yellow stickers are there?
Yellow |
Red |
Blue |
Green |
3 x 12 |
5 x 12 |
|
4 x 5 |
5 x 5 |
3 x 5 |
36 u |
20 u |
25 u |
15 u |
The number of yellow, red and blue stickers is the combined repeated identity.
Make the number of yellow, red and blue stickers the same using the LCM of 5 and 12.
LCM of 5 and 12 = 60
Number of more blue stickers than red stickers
= 25 u - 20 u
= 5 u
5 u = 10
1 u = 10 ÷ 5 = 2
Number of yellow stickers
= 36 u
= 36 x 2
= 72
Answer(s): 72