Adam has stickers in 4 colours.
79 of the stickers are red.
The rest of the stickers are green, blue and yellow in the ratio of 1 : 2 : 8.
If there are 30 more blue stickers than green stickers,
how many red stickers are there?
Red |
Green |
Blue |
Yellow |
7 x 11 |
2 x 11 |
|
1 x 2 |
2 x 2 |
8 x 2 |
77 u |
2 u |
4 u |
16 u |
The number of red, green and blue stickers is the combined repeated identity.
Make the number of red, green and blue stickers the same using the LCM of 2 and 11.
LCM of 2 and 11 = 22
Number of more blue stickers than green stickers
= 4 u - 2 u
= 2 u
2 u = 30
1 u = 30 ÷ 2 = 15
Number of red stickers
= 77 u
= 77 x 15
= 1155
Answer(s): 1155