Adam has stickers in 4 colours.
49 of the stickers are red.
The rest of the stickers are blue, green and yellow in the ratio of 2 : 4 : 5.
If there are 70 more green stickers than blue stickers,
how many red stickers are there?
Red |
Blue |
Green |
Yellow |
4 x 11 |
5 x 11 |
|
2 x 5 |
4 x 5 |
5 x 5 |
44 u |
10 u |
20 u |
25 u |
The number of red, blue and green stickers is the combined repeated identity.
Make the number of red, blue and green stickers the same using the LCM of 5 and 11.
LCM of 5 and 11 = 55
Number of more green stickers than blue stickers
= 20 u - 10 u
= 10 u
10 u = 70
1 u = 70 ÷ 10 = 7
Number of red stickers
= 44 u
= 44 x 7
= 308
Answer(s): 308