Adam has stickers in 4 colours.
89 of the stickers are red.
The rest of the stickers are green, yellow and blue in the ratio of 1 : 5 : 3.
If there are 100 more yellow stickers than green stickers,
how many red stickers are there?
Red |
Green |
Yellow |
Blue |
8 x 9 |
1 x 9 |
|
1 x 1 |
5 x 1 |
3 x 1 |
72 u |
1 u |
5 u |
3 u |
The number of red, green and yellow stickers is the combined repeated identity.
Make the number of red, green and yellow stickers the same using the LCM of 1 and 9.
LCM of 1 and 9 = 9
Number of more yellow stickers than green stickers
= 5 u - 1 u
= 4 u
4 u = 100
1 u = 100 ÷ 4 = 25
Number of red stickers
= 72 u
= 72 x 25
= 1800
Answer(s): 1800