Full-tank

A full-tank of petrol a car lasts for 10 days. If driver starts using 25% more everyday, how many days will the full-tank petrol last?

Correct answer:

d2 =  8

Step-by-step explanation:

d1=10 r1=100%+25%=1+10025=1.25  d1:d2 = r1  d1 = r1   d2  d2=d1/r1=10/1.25=8



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