Ivan had 154 apples and 85 persimmons at first. He used
47 of the apples and
45 of the persimmons. He then bought some more persimmons. In the end,
12 of the fruits he had left were apples. How many persimmons did he buy?
| |
Apples |
Persimmons |
Total |
| Before |
154 |
85 |
|
| Change 1 |
- 88 |
- 68 |
|
| After 1 |
66 |
17 |
|
| Change 2 |
|
+ some |
|
| After 2 |
1 u |
1 u |
2 u |
Number of apples that Ivan used
=
47 x 154
= 88
Number of apples that Ivan had left
= 154 - 88
= 66
Number of persimmons that Ivan used
=
45 x 85
= 68
Number of persimmons that Ivan had left
= 85 - 68
= 17
Fraction of the fruits left that were persimmons
= 1 -
12=
12 Number of apples left = 1 u = 66
Number of persimmons left in the end
= 1 u
= 1 x 66
= 66
Number of persimmons that Ivan bought
= 66 - 17
= 49
Answer(s): 49
