Victorium had some card collection.
25 of them were green and the rest were brown. She gave away 118 of the brown cards and 10% of the green cards. She then had
27 of her card collection left. How many cards did Victorium give away?
| |
Green |
Brown |
Total |
Total |
Before
|
2x7 =
14 u |
3x7 =
21 u |
5x7 =
35 u |
7x5 =
35 u |
Change
|
- 0.2x7 =
- 1.4 u |
- 118 |
|
- 5x5 =
- 25 u |
After
|
1.8x7 =
12.6 u |
21 u - 118 |
|
2x5 =
10 u |
The total number of cards that Victorium had at first is repeated. Make the total number of cards at first the same. LCM 5 and 7 is 35.
Number of green cards that Victorium gave away
= 10% x 2 u
=
10100 x 2 u
= 0.2 u
1.4 u - 118 = 25 u
25 u - 1.4 u = 118
23.6 u = 118
1 u = 118 ÷ 23.6 = 5
Number of cards that Victorium gave away
= 25 u
= 25 x 5
= 125
Answer(s): 125
