Adam has stickers in 4 colours.
47 of the stickers are green.
The rest of the stickers are yellow, blue and red in the ratio of 2 : 5 : 7.
If there are 90 more blue stickers than yellow stickers,
how many green stickers are there?
Green |
Yellow |
Blue |
Red |
4 x 14 |
3 x 14 |
|
2 x 3 |
5 x 3 |
7 x 3 |
56 u |
6 u |
15 u |
21 u |
The number of green, yellow and blue stickers is the combined repeated identity.
Make the number of green, yellow and blue stickers the same using the LCM of 3 and 14.
LCM of 3 and 14 = 42
Number of more blue stickers than yellow stickers
= 15 u - 6 u
= 9 u
9 u = 90
1 u = 90 ÷ 9 = 10
Number of green stickers
= 56 u
= 56 x 10
= 560
Answer(s): 560