Tank H contained 4 times as many guppies as Tank J. When 40% of the guppies in Tank H and 30% of the guppies in Tank J were transferred to Tank K, Tank K had 228 guppies, which was 20% more guppies than before. How many less guppies were there in Tank J than Tank H in the end?
|
Tank H |
Tank J |
Tank K |
Before |
4 u |
1 u |
5x1.9 = 9.5 u |
Change |
- 1.6 u |
- 0.3 u |
+ 1x1.9 = + 1.9 u |
After |
2.4 u |
0.7 u |
6x1.9 = 11.4 u |
Number of guppies that were transferred from Tank H to Tank K
= 40% x 4 u
=
40100 x 4 u
= 1.6 u
Number of guppies that were transferred from Tank J to Tank K
= 30% x 1 u
=
30100 x 1 u
= 0.3 u
20% =
20100 =
15Some guppies from Tank H and Tank J were transferred to Tank K. The total number of guppies transferred from Tank H and Tank J into Tank K is the same.
Total number of guppies transferred from Tank H and Tank J into Tank K
= 1.6 u + 0.3 u
= 1.9 u
11.4 u = 228
1 u = 228 ÷ 11.4 = 20
Number of less guppies in Tank J than Tank H
= 2.4 u - 0.7 u
= 1.7 u
= 1.7 x 20
= 34
Answer(s): 34