Adam has stickers in 4 colours.
310 of the stickers are red.
The rest of the stickers are blue, yellow and green in the ratio of 1 : 3 : 8.
If there are 140 more yellow stickers than blue stickers,
how many red stickers are there?
Red |
Blue |
Yellow |
Green |
3 x 12 |
7 x 12 |
|
1 x 7 |
3 x 7 |
8 x 7 |
36 u |
7 u |
21 u |
56 u |
The number of red, blue and yellow stickers is the combined repeated identity.
Make the number of red, blue and yellow stickers the same using the LCM of 7 and 12.
LCM of 7 and 12 = 84
Number of more yellow stickers than blue stickers
= 21 u - 7 u
= 14 u
14 u = 140
1 u = 140 ÷ 14 = 10
Number of red stickers
= 36 u
= 36 x 10
= 360
Answer(s): 360