Adam has stickers in 4 colours.
38 of the stickers are blue.
The rest of the stickers are red, yellow and green in the ratio of 1 : 5 : 4.
If there are 140 more yellow stickers than red stickers,
how many blue stickers are there?
Blue |
Red |
Yellow |
Green |
3 x 2 |
5 x 2 |
|
1 x 1 |
5 x 1 |
4 x 1 |
6 u |
1 u |
5 u |
4 u |
The number of blue, red and yellow stickers is the combined repeated identity.
Make the number of blue, red and yellow stickers the same using the LCM of 5 and 10.
LCM of 5 and 10 = 10
Number of more yellow stickers than red stickers
= 5 u - 1 u
= 4 u
4 u = 140
1 u = 140 ÷ 4 = 35
Number of blue stickers
= 6 u
= 6 x 35
= 210
Answer(s): 210