Adam has stickers in 4 colours.
38 of the stickers are yellow.
The rest of the stickers are green, blue and red in the ratio of 2 : 5 : 7.
If there are 90 more blue stickers than green stickers,
how many yellow stickers are there?
Yellow |
Green |
Blue |
Red |
3 x 14 |
5 x 14 |
|
2 x 5 |
5 x 5 |
7 x 5 |
42 u |
10 u |
25 u |
35 u |
The number of yellow, green and blue stickers is the combined repeated identity.
Make the number of yellow, green and blue stickers the same using the LCM of 5 and 14.
LCM of 5 and 14 = 70
Number of more blue stickers than green stickers
= 25 u - 10 u
= 15 u
15 u = 90
1 u = 90 ÷ 15 = 6
Number of yellow stickers
= 42 u
= 42 x 6
= 252
Answer(s): 252