Adam has stickers in 4 colours.
89 of the stickers are red.
The rest of the stickers are yellow, green and blue in the ratio of 1 : 3 : 7.
If there are 90 more green stickers than yellow stickers,
how many red stickers are there?
Red |
Yellow |
Green |
Blue |
8 x 11 |
1 x 11 |
|
1 x 1 |
3 x 1 |
7 x 1 |
88 u |
1 u |
3 u |
7 u |
The number of red, yellow and green stickers is the combined repeated identity.
Make the number of red, yellow and green stickers the same using the LCM of 1 and 11.
LCM of 1 and 11 = 11
Number of more green stickers than yellow stickers
= 3 u - 1 u
= 2 u
2 u = 90
1 u = 90 ÷ 2 = 45
Number of red stickers
= 88 u
= 88 x 45
= 3960
Answer(s): 3960