Adam has stickers in 4 colours.
49 of the stickers are red.
The rest of the stickers are yellow, green and blue in the ratio of 1 : 5 : 4.
If there are 140 more green stickers than yellow stickers,
how many red stickers are there?
Red |
Yellow |
Green |
Blue |
4 x 2 |
5 x 2 |
|
1 x 1 |
5 x 1 |
4 x 1 |
8 u |
1 u |
5 u |
4 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 5 and 10.
LCM of 5 and 10 = 10
Number of more green stickers than yellow stickers
= 5 u - 1 u
= 4 u
4 u = 140
1 u = 140 ÷ 4 = 35
Number of red stickers
= 8 u
= 8 x 35
= 280
Answer(s): 280