The Hobson

The Hobson family is on a road trip, and their gas tank is 1/10 full. If they can drive 40 more miles, what fraction of the tank does each mile consume?

Correct answer:

x =  1/400

Step-by-step explanation:

t=1/10=101=0.1 n=40 mi  x=t/n=0.1/40=4001=0.0025

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