Nick had 100 kiwis and 80 chikoos at first. He used
310 of the kiwis and
78 of the chikoos. He then bought some more chikoos. In the end,
19 of the fruits he had left were kiwis. How many chikoos did he buy?
| |
Kiwis |
Chikoos |
Total |
| Before |
100 |
80 |
|
| Change 1 |
- 30 |
- 70 |
|
| After 1 |
70 |
10 |
|
| Change 2 |
|
+ some |
|
| After 2 |
1 u |
8 u |
9 u |
Number of kiwis that Nick used
=
310 x 100
= 30
Number of kiwis that Nick had left
= 100 - 30
= 70
Number of chikoos that Nick used
=
78 x 80
= 70
Number of chikoos that Nick had left
= 80 - 70
= 10
Fraction of the fruits left that were chikoos
= 1 -
19=
89 Number of kiwis left = 1 u = 70
Number of chikoos left in the end
= 8 u
= 8 x 70
= 560
Number of chikoos that Nick bought
= 560 - 10
= 550
Answer(s): 550
