Xiao Ming's father is in the coal business. Now he is going to rent a car to faint 62 tons of coal from Yancheng to Sheyang. The big truck of Yancheng transportation company transports 10 tons each time, and the freight is 200 yuan. The small truck transports 4 tons each time, and the freight is 95 yuan. Can you help Xiao Ming's father design the most cost-effective plan, how many cars should be used, and how much is the freight?

Xiao Ming's father is in the coal business. Now he is going to rent a car to faint 62 tons of coal from Yancheng to Sheyang. The big truck of Yancheng transportation company transports 10 tons each time, and the freight is 200 yuan. The small truck transports 4 tons each time, and the freight is 95 yuan. Can you help Xiao Ming's father design the most cost-effective plan, how many cars should be used, and how much is the freight?

This problem is very simple, with 10 △ 4 = 2.5, and then 2.5 × 95 = 237.5, so every ten tons of coal transported by large trucks is 37.5 yuan less than small trucks, so 62 tons of coal transported by 6 large trucks, a small truck, a total of 1295 yuan!

A construction site needs 80m & sup3; sand. If the density of sand is 1.4 × 10 & sup3; kg / M & sup3;, how many times can a 5T truck transport the sand

First, the mass of sand is determined as 80m & sup3; × 1.4 × 10 & sup3; kg / M & sup3; = 112 × 10 & sup3; kg = 112t
Because the vehicle weight is 5T, so 112t △ 5T = 22.4
So it takes 23 times to finish

A 5m wide road is paved with 3 times of 1.5 * 10 kg / M cubic meter bricks with a thickness of 4cm. The bricks are transported by 6000kg trucks,
How long is the maximum road length per car?

The thickness of brick is 4cm = 0.04m
A maximum of X meters of road can be paved with bricks per car
5x=6000/(0.04*1.5*10³)
5x=100
x=20
Each car can pave up to 20 meters of road

How many times does it take to transport 19.5 tons of sand with a 3.25 ton truck?

19.5 △ 3.25 = 6 (Times); answer: need to transport 6 times