Jack had 165 kiwis and 80 mangosteens at first. He used
411 of the kiwis and
710 of the mangosteens. He then bought some more mangosteens. In the end,
12 of the fruits he had left were kiwis. How many mangosteens did he buy?
| |
Kiwis |
Mangosteens |
Total |
| Before |
165 |
80 |
|
| Change 1 |
- 60 |
- 56 |
|
| After 1 |
105 |
24 |
|
| Change 2 |
|
+ some |
|
| After 2 |
1 u |
1 u |
2 u |
Number of kiwis that Jack used
=
411 x 165
= 60
Number of kiwis that Jack had left
= 165 - 60
= 105
Number of mangosteens that Jack used
=
710 x 80
= 56
Number of mangosteens that Jack had left
= 80 - 56
= 24
Fraction of the fruits left that were mangosteens
= 1 -
12=
12 Number of kiwis left = 1 u = 105
Number of mangosteens left in the end
= 1 u
= 1 x 105
= 105
Number of mangosteens that Jack bought
= 105 - 24
= 81
Answer(s): 81
