Question

Answer each part. If necessary, round your answers to the nearest hundredth.(a) At Hoffman's Bike Rentals, it costs $15 to rent a bike for 3 hours.How many dollars does it cost per hour of bike use?dollars per hour(b) It takes 43 pounds of seed to completely plant a 5-acre field.How many acres can be planted per pound of seed?acres per poundI need help with this math problem.

Answer 1

a) Suppose that the ratio cost:hours is constant; therefore,

$\frac{15dollars}{3hours}=\frac{15}{3}\frac{dollars}{hours}=5\frac{dollars}{hours}$

The answer to part a) is 5 dollars per hour.

b) Similarly,

$\frac{5acres}{43pounds}=\frac{5}{43}\frac{acres}{pound}\approx0.12\frac{acres}{pound}$

The rounded answer is 0.12 acres per pound.