Adam has stickers in 4 colours.
37 of the stickers are red.
The rest of the stickers are yellow, blue and green in the ratio of 1 : 5 : 8.
If there are 40 more blue stickers than yellow stickers,
how many red stickers are there?
Red |
Yellow |
Blue |
Green |
3 x 7 |
4 x 7 |
|
1 x 2 |
5 x 2 |
8 x 2 |
21 u |
2 u |
10 u |
16 u |
The number of red, yellow and blue stickers is the combined repeated identity.
Make the number of red, yellow and blue stickers the same using the LCM of 4 and 14.
LCM of 4 and 14 = 28
Number of more blue stickers than yellow stickers
= 10 u - 2 u
= 8 u
8 u = 40
1 u = 40 ÷ 8 = 5
Number of red stickers
= 21 u
= 21 x 5
= 105
Answer(s): 105