Tank T contained 3 times as many guppies as Tank U. When 20% of the guppies in Tank T and 20% of the guppies in Tank U were transferred to Tank V, Tank V had 120 guppies, which was 25% more guppies than before. How many more guppies were there in Tank V than Tank U in the end?
|
Tank T |
Tank U |
Tank V |
Before |
3 u |
1 u |
4x0.8 = 3.2 u |
Change |
- 0.6 u |
- 0.2 u |
+ 1x0.8 = + 0.8 u |
After |
2.4 u |
0.8 u |
5x0.8 = 4 u |
Number of guppies that were transferred from Tank T to Tank V
= 20% x 3 u
=
20100 x 3 u
= 0.6 u
Number of guppies that were transferred from Tank U to Tank V
= 20% x 1 u
=
20100 x 1 u
= 0.2 u
25% =
25100 =
14Some guppies from Tank T and Tank U were transferred to Tank V. The total number of guppies transferred from Tank T and Tank U into Tank V is the same.
Total number of guppies transferred from Tank T and Tank U into Tank V
= 0.6 u + 0.2 u
= 0.8 u
4 u = 120
1 u = 120 ÷ 4 = 30
Number of more guppies in Tank V than Tank U
= 4 u - 0.8 u
= 3.2 u
= 3.2 x 30
= 96
Answer(s): 96