Adam has stickers in 4 colours.
45 of the stickers are yellow.
The rest of the stickers are blue, red and green in the ratio of 2 : 4 : 5.
If there are 90 more red stickers than blue stickers,
how many yellow stickers are there?
Yellow |
Blue |
Red |
Green |
4 x 11 |
1 x 11 |
|
2 x 1 |
4 x 1 |
5 x 1 |
44 u |
2 u |
4 u |
5 u |
The number of yellow, blue and red stickers is the combined repeated identity.
Make the number of yellow, blue and red stickers the same using the LCM of 1 and 11.
LCM of 1 and 11 = 11
Number of more red stickers than blue stickers
= 4 u - 2 u
= 2 u
2 u = 90
1 u = 90 ÷ 2 = 45
Number of yellow stickers
= 44 u
= 44 x 45
= 1980
Answer(s): 1980