Adam has stickers in 4 colours.
35 of the stickers are yellow.
The rest of the stickers are green, red and blue in the ratio of 1 : 4 : 5.
If there are 90 more red stickers than green stickers,
how many yellow stickers are there?
Yellow |
Green |
Red |
Blue |
3 x 5 |
2 x 5 |
|
1 x 1 |
4 x 1 |
5 x 1 |
15 u |
1 u |
4 u |
5 u |
The number of yellow, green and red stickers is the combined repeated identity.
Make the number of yellow, green and red stickers the same using the LCM of 2 and 10.
LCM of 2 and 10 = 10
Number of more red stickers than green stickers
= 4 u - 1 u
= 3 u
3 u = 90
1 u = 90 ÷ 3 = 30
Number of yellow stickers
= 15 u
= 15 x 30
= 450
Answer(s): 450