There was an equal number of passion fruits and kiwis. On Wednesday, some passion fruits were added, such that the number of passion fruits increased by 80%. On Thursday, the number of passion fruits further increased by 50% and the number of kiwis decreased by 20%. There were 19 more passion fruits than kiwis in the end. How many passion fruits and kiwis were there altogether at first?
|
Passion Fruits |
Kiwis |
Before |
1 u |
1 u |
Change 1 |
+ 0.8 u |
No change |
After 1 |
1.8 u |
1 u |
Change 2 |
+ 0.9 u |
- 0.2 u |
After 2 |
2.7 u |
0.8 u |
Number of passion fruits added on Wednesday
= 80% x 1 u
=
80100 x 1 u
= 0.8 u
Number of passion fruits increased on Thursday
= 50% x 1.8 u
=
50100 x 1.8 u
= 0.9 u
Number of kiwis decreased on Thursday
= 20% x 1 u
=
20100 x 1 u
= 0.2 u
Number of more passion fruits than kiwis in the end
= 2.7 u - 0.8 u
= 1.9 u
1.9 u = 19
1 u = 19 ÷ 1.9 = 10
Total number of passion fruits and kiwis at first
= 1 u + 1 u
= 2 u
= 2 x 10
= 20
Answer(s): 20