Adam has stickers in 4 colours.
78 of the stickers are green.
The rest of the stickers are blue, red and yellow in the ratio of 2 : 4 : 9.
If there are 30 more red stickers than blue stickers,
how many green stickers are there?
Green |
Blue |
Red |
Yellow |
7 x 15 |
1 x 15 |
|
2 x 1 |
4 x 1 |
9 x 1 |
105 u |
2 u |
4 u |
9 u |
The number of green, blue and red stickers is the combined repeated identity.
Make the number of green, blue and red stickers the same using the LCM of 1 and 15.
LCM of 1 and 15 = 15
Number of more red stickers than blue stickers
= 4 u - 2 u
= 2 u
2 u = 30
1 u = 30 ÷ 2 = 15
Number of green stickers
= 105 u
= 105 x 15
= 1575
Answer(s): 1575