Albert had 90 mangosteens and 168 kiwis at first. He used
59 of the mangosteens and
78 of the kiwis. He then bought some more kiwis. In the end,
17 of the fruits he had left were mangosteens. How many kiwis did he buy?
| |
Mangosteens |
Kiwis |
Total |
| Before |
90 |
168 |
|
| Change 1 |
- 50 |
- 147 |
|
| After 1 |
40 |
21 |
|
| Change 2 |
|
+ some |
|
| After 2 |
1 u |
6 u |
7 u |
Number of mangosteens that Albert used
=
59 x 90
= 50
Number of mangosteens that Albert had left
= 90 - 50
= 40
Number of kiwis that Albert used
=
78 x 168
= 147
Number of kiwis that Albert had left
= 168 - 147
= 21
Fraction of the fruits left that were kiwis
= 1 -
17=
67 Number of mangosteens left = 1 u = 40
Number of kiwis left in the end
= 6 u
= 6 x 40
= 240
Number of kiwis that Albert bought
= 240 - 21
= 219
Answer(s): 219
