Tank F contained 2 times as many guppies as Tank G. When 30% of the guppies in Tank F and 20% of the guppies in Tank G were transferred to Tank H, Tank H had 48 guppies, which was 50% more guppies than before. How many more guppies were there in Tank H than Tank G in the end?

	Tank F	Tank G	Tank H
Before	2 u	1 u	2x0.8 = 1.6 u
Change	- 0.6 u	- 0.2 u	+ 1x0.8 = + 0.8 u
After	1.4 u	0.8 u	3x0.8 = 2.4 u

Number of guppies that were transferred from Tank F to Tank H
= 30% x 2 u
= ³⁰₁₀₀ x 2 u
= 0.6 u

Number of guppies that were transferred from Tank G to Tank H
= 20% x 1 u
= ²⁰₁₀₀ x 1 u
= 0.2 u

50% = ⁵⁰₁₀₀ = ¹₂

Some guppies from Tank F and Tank G were transferred to Tank H.  The total number of guppies transferred from Tank F and Tank G into Tank H is the same.

Total number of guppies transferred from Tank F and Tank G into Tank H
= 0.6 u + 0.2 u
= 0.8 u

2.4 u = 48

1 u = 48 ÷ 2.4 = 20

Number of more guppies in Tank H than Tank G
= 2.4 u - 0.8 u
= 1.6 u
= 1.6 x 20
= 32

Answer(s): 32