The bus uses 80 gallons of fuel to fly 320 miles. At this rate, how many gallons of fuel are needed for a 800 mile bus?  Choose one
A) 100 B) 300 C) 150 D) 200 E) 50
Number of gallons of fuel per mile = 320 /80= 
<gadget id="calculator">320 /80</gadget>
<output>4</output>
4 gallons per mile   Number of gallons of fuel for a 800 mile bus= 800/4= 
<gadget id="calculator">800/4</gadget>
<output>200</output>
200   ANSWER:200
<result>D</result>
The bus uses 80 gallons of fuel to fly 320 miles. At this rate, how many gallons of fuel are needed for a 800 mile bus?