There are 20 rabbits living in the hotel. The hotel has the following two kinds of houses. Small house: each room can accommodate 4 rabbits. ...

(1): ① 4× 5 = 20, you can rent 5 small houses;

②2×6+2×4=20, you can rent two big houses and two small houses.

Answer: ① You can rent five small houses; You can rent two big houses and two small houses.

(2)①6×5=30 (yuan)

②8×2+6×2

= 16+ 12

=28 (yuan)

30 yuan > 28 yuan, so rent two big houses and two small houses.

A: Rent two big houses and two small houses to save money.