Zeph had 90 pears and 200 mangoes at first. He used
49 of the pears and
38 of the mangoes. He then bought some more mangoes. In the end,
17 of the fruits he had left were pears. How many mangoes did he buy?
| |
Pears |
Mangoes |
Total |
| Before |
90 |
200 |
|
| Change 1 |
- 40 |
- 75 |
|
| After 1 |
50 |
125 |
|
| Change 2 |
|
+ some |
|
| After 2 |
1 u |
6 u |
7 u |
Number of pears that Zeph used
=
49 x 90
= 40
Number of pears that Zeph had left
= 90 - 40
= 50
Number of mangoes that Zeph used
=
38 x 200
= 75
Number of mangoes that Zeph had left
= 200 - 75
= 125
Fraction of the fruits left that were mangoes
= 1 -
17=
67 Number of pears left = 1 u = 50
Number of mangoes left in the end
= 6 u
= 6 x 50
= 300
Number of mangoes that Zeph bought
= 300 - 125
= 175
Answer(s): 175
