exam Maths Puzzle Numerical Ability

R=3-a(b+2d)

solve for b

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exam Other Question

A car rental company charges $25 a day plus $.10 a mile. If I rented a car for 3 days and was charged $105. For how many miles did I get charge? If he actually drove the car 250 mi The distance from Philadelphia to Sea Isle City is 100 miles. The tires on the car have a radius of 14inches. How many revolutions of each tire occured on the trip?