David had 196 kiwis and 176 lemons at first. He used
47 of the kiwis and
38 of the lemons. He then bought some more lemons. In the end,
19 of the fruits he had left were kiwis. How many lemons did he buy?
|
Kiwis |
Lemons |
Total |
Before |
196 |
176 |
|
Change 1 |
- 112 |
- 66 |
|
After 1 |
84 |
110 |
|
Change 2 |
|
+ some |
|
After 2 |
1 u |
8 u |
9 u |
Number of kiwis that David used
=
47 x 196
= 112
Number of kiwis that David had left
= 196 - 112
= 84
Number of lemons that David used
=
38 x 176
= 66
Number of lemons that David had left
= 176 - 66
= 110
Fraction of the fruits left that were lemons
= 1 -
19=
89 Number of kiwis left = 1 u = 84
Number of lemons left in the end
= 8 u
= 8 x 84
= 672
Number of lemons that David bought
= 672 - 110
= 562
Answer(s): 562