A batch of 202 heavy goods are transported by two kinds of vehicles with a load of 6 tons and 8 tons at one time. It is known that there is one more vehicle with a load of 6 tons than that with a load of 8 tons. How many vehicles are needed for each of the two kinds of vehicles? It has been calculated that there will be 15 vehicles with a load of 6 tons and 14 vehicles with a load of 8 tons. I want to say How to make a formula?

A batch of 202 heavy goods are transported by two kinds of vehicles with a load of 6 tons and 8 tons at one time. It is known that there is one more vehicle with a load of 6 tons than that with a load of 8 tons. How many vehicles are needed for each of the two kinds of vehicles? It has been calculated that there will be 15 vehicles with a load of 6 tons and 14 vehicles with a load of 8 tons. I want to say How to make a formula?

15 cars of 6 tons, 14 cars of 8 tons
You can imagine merging a 6-ton car and an 8-ton car into a 14 ton car
After the merger, there will be an extra 6-ton car
So 202 tons minus 6 tons gets 196 tons
The 196 tons need 14 tons of parking space and 14 cars
So 8 ton cars are 14
6 tons, 15 more than him