Adam has stickers in 4 colours.
78 of the stickers are green.
The rest of the stickers are red, yellow and blue in the ratio of 3 : 5 : 7.
If there are 140 more yellow stickers than red stickers,
how many green stickers are there?
Green |
Red |
Yellow |
Blue |
7 x 15 |
1 x 15 |
|
3 x 1 |
5 x 1 |
7 x 1 |
105 u |
3 u |
5 u |
7 u |
The number of green, red and yellow stickers is the combined repeated identity.
Make the number of green, red and yellow stickers the same using the LCM of 1 and 15.
LCM of 1 and 15 = 15
Number of more yellow stickers than red stickers
= 5 u - 3 u
= 2 u
2 u = 140
1 u = 140 ÷ 2 = 70
Number of green stickers
= 105 u
= 105 x 70
= 7350
Answer(s): 7350