Adam has stickers in 4 colours.
67 of the stickers are blue.
The rest of the stickers are yellow, red and green in the ratio of 1 : 3 : 3.
If there are 100 more red stickers than yellow stickers,
how many blue stickers are there?
Blue |
Yellow |
Red |
Green |
6 x 7 |
1 x 7 |
|
1 x 1 |
3 x 1 |
3 x 1 |
42 u |
1 u |
3 u |
3 u |
The number of blue, yellow and red stickers is the combined repeated identity.
Make the number of blue, yellow and red stickers the same using the LCM of 1 and 7.
LCM of 1 and 7 = 7
Number of more red stickers than yellow stickers
= 3 u - 1 u
= 2 u
2 u = 100
1 u = 100 ÷ 2 = 50
Number of blue stickers
= 42 u
= 42 x 50
= 2100
Answer(s): 2100