Adam has stickers in 4 colours.
35 of the stickers are red.
The rest of the stickers are yellow, green and blue in the ratio of 2 : 5 : 6.
If there are 120 more green stickers than yellow stickers,
how many red stickers are there?
Red |
Yellow |
Green |
Blue |
3 x 13 |
2 x 13 |
|
2 x 2 |
5 x 2 |
6 x 2 |
39 u |
4 u |
10 u |
12 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 2 and 13.
LCM of 2 and 13 = 26
Number of more green stickers than yellow stickers
= 10 u - 4 u
= 6 u
6 u = 120
1 u = 120 ÷ 6 = 20
Number of red stickers
= 39 u
= 39 x 20
= 780
Answer(s): 780