Adam has stickers in 4 colours.
35 of the stickers are green.
The rest of the stickers are red, blue and yellow in the ratio of 1 : 2 : 4.
If there are 30 more blue stickers than red stickers,
how many green stickers are there?
Green |
Red |
Blue |
Yellow |
3 x 7 |
2 x 7 |
|
1 x 2 |
2 x 2 |
4 x 2 |
21 u |
2 u |
4 u |
8 u |
The number of green, red and blue stickers is the combined repeated identity.
Make the number of green, red and blue stickers the same using the LCM of 2 and 7.
LCM of 2 and 7 = 14
Number of more blue stickers than red stickers
= 4 u - 2 u
= 2 u
2 u = 30
1 u = 30 ÷ 2 = 15
Number of green stickers
= 21 u
= 21 x 15
= 315
Answer(s): 315