Adam has stickers in 4 colours.
35 of the stickers are red.
The rest of the stickers are blue, yellow and green in the ratio of 1 : 3 : 8.
If there are 20 more yellow stickers than blue stickers,
how many red stickers are there?
Red |
Blue |
Yellow |
Green |
3 x 6 |
2 x 6 |
|
1 x 1 |
3 x 1 |
8 x 1 |
18 u |
1 u |
3 u |
8 u |
The number of red, blue and yellow stickers is the combined repeated identity.
Make the number of red, blue and yellow stickers the same using the LCM of 2 and 12.
LCM of 2 and 12 = 12
Number of more yellow stickers than blue stickers
= 3 u - 1 u
= 2 u
2 u = 20
1 u = 20 ÷ 2 = 10
Number of red stickers
= 18 u
= 18 x 10
= 180
Answer(s): 180