Lee had 65 pears and 60 persimmons at first. He used
45 of the pears and
710 of the persimmons. He then bought some more persimmons. In the end,
18 of the fruits he had left were pears. How many persimmons did he buy?
| |
Pears |
Persimmons |
Total |
| Before |
65 |
60 |
|
| Change 1 |
- 52 |
- 42 |
|
| After 1 |
13 |
18 |
|
| Change 2 |
|
+ some |
|
| After 2 |
1 u |
7 u |
8 u |
Number of pears that Lee used
=
45 x 65
= 52
Number of pears that Lee had left
= 65 - 52
= 13
Number of persimmons that Lee used
=
710 x 60
= 42
Number of persimmons that Lee had left
= 60 - 42
= 18
Fraction of the fruits left that were persimmons
= 1 -
18=
78 Number of pears left = 1 u = 13
Number of persimmons left in the end
= 7 u
= 7 x 13
= 91
Number of persimmons that Lee bought
= 91 - 18
= 73
Answer(s): 73
