Adam has 6 times as many red stickers as green stickers.
He buys another 100 green stickers.
Adam has equal number of red and green stickers.
- How many more red stickers than green stickers does Adam have at first?
- How many green stickers and red stickers does Adam have in the end?
|
Red |
Green |
Before |
6 x 1 = 6 u |
1 x 1 = 1 u |
Change |
No Change |
+ 100 |
After |
1 × 6 = 6 u |
1 × 6 = 6 u |
(a)
The number of red stickers Adam has at first and in the end remains unchanged.
Make the number of red stickers the same using the LCM of 1 and 6.
LCM of 1 and 6 = 6
Number of green stickers that Adam buys
= 6 u - 1 u
= 5 u
5 u = 100
1 u = 100 ÷ 5 = 20
Number of more red stickers than green stickers at first
= 6 u - 1 u
= 5 u
= 5 x 20
= 100
(b)
Number of green stickers and red stickers in the end
= 6 u + 6 u
= 12 u
= 12 × 20
= 240
Answer(s): (a) 100; (b) 240