Daniel had 140 pears and 81 oranges at first. He used
37 of the pears and
79 of the oranges. He then bought some more oranges. In the end,
12 of the fruits he had left were pears. How many oranges did he buy?
| |
Pears |
Oranges |
Total |
| Before |
140 |
81 |
|
| Change 1 |
- 60 |
- 63 |
|
| After 1 |
80 |
18 |
|
| Change 2 |
|
+ some |
|
| After 2 |
1 u |
1 u |
2 u |
Number of pears that Daniel used
=
37 x 140
= 60
Number of pears that Daniel had left
= 140 - 60
= 80
Number of oranges that Daniel used
=
79 x 81
= 63
Number of oranges that Daniel had left
= 81 - 63
= 18
Fraction of the fruits left that were oranges
= 1 -
12=
12 Number of pears left = 1 u = 80
Number of oranges left in the end
= 1 u
= 1 x 80
= 80
Number of oranges that Daniel bought
= 80 - 18
= 62
Answer(s): 62
