If the odometer reading is 30,000 miles on your car and you have changed the factory-installed tires(circumference of 93 inches) to bigger tires(circumference of 103 inches), you have actually traveled ____ miles
choices:
A. 33,300
B. 3,000
C. 2,700
D. 30, 330
step 1
we know that
1 mile=63360 inches
Convert 93 in to miles
93 in=93/63360 miles
Divide 30,000 miles by 93/63360
we have
20,438,709.68 rev
Multiply by 103/63360
so
20,438,709.68(103/63360)=33,226 miles
therefore
the answer is
option A