Adam has stickers in 4 colours.
59 of the stickers are blue.
The rest of the stickers are yellow, red and green in the ratio of 1 : 2 : 7.
If there are 130 more red stickers than yellow stickers,
how many blue stickers are there?
Blue |
Yellow |
Red |
Green |
5 x 5 |
4 x 5 |
|
1 x 2 |
2 x 2 |
7 x 2 |
25 u |
2 u |
4 u |
14 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 4 and 10.
LCM of 4 and 10 = 20
Number of more red stickers than yellow stickers
= 4 u - 2 u
= 2 u
2 u = 130
1 u = 130 ÷ 2 = 65
Number of blue stickers
= 25 u
= 25 x 65
= 1625
Answer(s): 1625