Tank C contained 3 times as many guppies as Tank D. When 50% of the guppies in Tank C and 40% of the guppies in Tank D were transferred to Tank E, Tank E had 190 guppies, which was 25% more guppies than before. How many more guppies were there in Tank E than Tank D in the end?
|
Tank C |
Tank D |
Tank E |
Before |
3 u |
1 u |
4x1.9 = 7.6 u |
Change |
- 1.5 u |
- 0.4 u |
+ 1x1.9 = + 1.9 u |
After |
1.5 u |
0.6 u |
5x1.9 = 9.5 u |
Number of guppies that were transferred from Tank C to Tank E
= 50% x 3 u
=
50100 x 3 u
= 1.5 u
Number of guppies that were transferred from Tank D to Tank E
= 40% x 1 u
=
40100 x 1 u
= 0.4 u
25% =
25100 =
14Some guppies from Tank C and Tank D were transferred to Tank E. The total number of guppies transferred from Tank C and Tank D into Tank E is the same.
Total number of guppies transferred from Tank C and Tank D into Tank E
= 1.5 u + 0.4 u
= 1.9 u
9.5 u = 190
1 u = 190 ÷ 9.5 = 20
Number of more guppies in Tank E than Tank D
= 9.5 u - 0.6 u
= 8.9 u
= 8.9 x 20
= 178
Answer(s): 178