Adam has stickers in 4 colours.
710 of the stickers are red.
The rest of the stickers are blue, yellow and green in the ratio of 3 : 4 : 3.
If there are 90 more yellow stickers than blue stickers,
how many red stickers are there?
Red |
Blue |
Yellow |
Green |
7 x 10 |
3 x 10 |
|
3 x 3 |
4 x 3 |
3 x 3 |
70 u |
9 u |
12 u |
9 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 3 and 10.
LCM of 3 and 10 = 30
Number of more yellow stickers than blue stickers
= 12 u - 9 u
= 3 u
3 u = 90
1 u = 90 ÷ 3 = 30
Number of red stickers
= 70 u
= 70 x 30
= 2100
Answer(s): 2100