Adam has stickers in 4 colours.
45 of the stickers are red.
The rest of the stickers are green, blue and yellow in the ratio of 1 : 5 : 5.
If there are 20 more blue stickers than green stickers,
how many red stickers are there?
Red |
Green |
Blue |
Yellow |
4 x 11 |
1 x 11 |
|
1 x 1 |
5 x 1 |
5 x 1 |
44 u |
1 u |
5 u |
5 u |
The number of red, green and blue stickers is the combined repeated identity.
Make the number of red, green and blue stickers the same using the LCM of 1 and 11.
LCM of 1 and 11 = 11
Number of more blue stickers than green stickers
= 5 u - 1 u
= 4 u
4 u = 20
1 u = 20 ÷ 4 = 5
Number of red stickers
= 44 u
= 44 x 5
= 220
Answer(s): 220