(1)(1÷5):(1÷6),
=
1
5 :
1
6 ,
=(
1
5 ×30):(
1
6 ×30),
=6:5;
(2)(6-5)÷5,
=1÷5,
=20%;
答:货车的速度与客车的速度的比是6:5,货车的速度比客车的速度快20%.
故答案为:6:5,20.
(1)(1÷5):(1÷6),
=
1
5 :
1
6 ,
=(
1
5 ×30):(
1
6 ×30),
=6:5;
(2)(6-5)÷5,
=1÷5,
=20%;
答:货车的速度与客车的速度的比是6:5,货车的速度比客车的速度快20%.
故答案为:6:5,20.