The reasons are as follows: 130÷8= 16.25 (yuan) is the cost of each large truck.
90÷5= 18 (yuan) is the cost of each pickup truck.
∵ 18 & gt; 16.25∴ saving money with big trucks
197 ÷ 8 = 24 cars ... 5 tons
So we use 24 trolleys, 1 car.