Below is an instruction that describes a task. Write a response that appropriately completes the request in English. Please answer in English.

### Instruction:
John uses 5 liters of fuel per km to travel. How many liters of fuel should John plan to use if he plans to travel on two trips of 30 km and 20 km?

### Response:
The first trip will use 30*5=<<30*5=150>>150 liters of fuel.
The second trip will use 20*5=<<20*5=100>>100 liters of fuel.
You can find the total liters of fuel used by adding the liters for the two trips: 150 + 100 = <<150+100=250>>250 liters
#### 250