Paul had 128 pears and 105 mangoes at first. He used
58 of the pears and
67 of the mangoes. He then bought some more mangoes. In the end,
19 of the fruits he had left were pears. How many mangoes did he buy?
| |
Pears |
Mangoes |
Total |
| Before |
128 |
105 |
|
| Change 1 |
- 80 |
- 90 |
|
| After 1 |
48 |
15 |
|
| Change 2 |
|
+ some |
|
| After 2 |
1 u |
8 u |
9 u |
Number of pears that Paul used
=
58 x 128
= 80
Number of pears that Paul had left
= 128 - 80
= 48
Number of mangoes that Paul used
=
67 x 105
= 90
Number of mangoes that Paul had left
= 105 - 90
= 15
Fraction of the fruits left that were mangoes
= 1 -
19=
89 Number of pears left = 1 u = 48
Number of mangoes left in the end
= 8 u
= 8 x 48
= 384
Number of mangoes that Paul bought
= 384 - 15
= 369
Answer(s): 369
