Adam has 50 red stickers and 70 green stickers.
After giving away the same number of stickers,
the ratio of the red stickers and the green stickers becomes 1 : 6.
How many stickers are given away?
|
Red |
Green |
Difference |
Before |
50 |
70 |
20 |
Change |
- ? |
- ? |
|
After |
1 u |
6 u |
5 u |
At first
Difference in the number of stickers
= 70 - 50
= 20
In the end
Difference in the number of stickers in units
= 6 u - 1 u
= 5 u
The difference in the number of stickers between the red stickers and the green stickers remains unchanged.
5 u = 20
1 u = 20 ÷ 5 = 4
Number of red stickers that Adam gives away
= 50 - 4
= 46
Total number of stickers that Adam gives away
= 2 x 46
= 92
Answer(s): 92