Adam has stickers in 4 colours.
38 of the stickers are red.
The rest of the stickers are yellow, green and blue in the ratio of 1 : 3 : 3.
If there are 140 more green stickers than yellow stickers,
how many red stickers are there?
Red |
Yellow |
Green |
Blue |
3 x 7 |
5 x 7 |
|
1 x 5 |
3 x 5 |
3 x 5 |
21 u |
5 u |
15 u |
15 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 5 and 7.
LCM of 5 and 7 = 35
Number of more green stickers than yellow stickers
= 15 u - 5 u
= 10 u
10 u = 140
1 u = 140 ÷ 10 = 14
Number of red stickers
= 21 u
= 21 x 14
= 294
Answer(s): 294