Adam has 60 red stickers.
He has 2 times as many red stickers than blue stickers.
After he gives away an equal number of red and blue stickers,
the number of red stickers is 4 times that of the blue stickers.
- How many red stickers are there in the end?
- How many blue stickers are there in the end?
- How many stickers are there in the end?
- How many stickers does Adam give away?
|
Red stickers |
Blue stickers |
Difference |
Before |
2 x 3 = 6 u |
1 x 3 = 3 u |
1 x 3 = 3 u |
Change |
- ? |
- ? |
|
After |
4 x 1 = 4 u |
1 x 1 = 1 u |
3 x 1 = 3 u |
(a)
The difference in the number between the red and blue stickers at first and in the end remains unchanged.
LCM of 1 and 3 is 3.
6 u = 60
1 u = 60 ÷ 6 = 10
Number of red stickers in the end
= 4 u
= 4 x 10
= 40
(b)
Number of blue stickers in the end
= 1 u
= 1 x 10
= 10
(c)
Total number of stickers in the end
= 40 + 10
= 50
(d)
Total number of stickers that Adam gives away
= (6 u - 4 u) x 2
= 2 u x 2
= 4 u
= 4 x 10
= 40
Answer(s): (a) 40; (b) 10; (c) 50; (d) 40