Question

How many hours will it take Flo and Bryan to mow their lawn?

a) 6 hours
b) 3 hours
c) 2 hours
d) 1 hour

Answer 1

Flo and Bryan will take approximately 1125 hours to mow their lawn.

Step-by-step explanation:

To answer this question, we need to use the given rate equation: ŷ = 1350 - 1.2x, where x is the number of hours and ŷ represents the number of acres left to mow. Flo and Bryan are two people, so their combined rate will be 2(1350 - 1.2x). We need to find the time it takes to mow all the lawns, which means ŷ = 0. Let's solve the equation:

0 = 2(1350 - 1.2x)

0 = 2700 - 2.4x

2.4x = 2700

x = 2700 / 2.4

x = 1125

So it will take Flo and Bryan approximately 1125 hours to mow their lawn.