Naomi has earned $54 mowing lawns the past two days. she worked 2 1/2 hrs yesterday and 4 1/4 hours today. if naomi is paid the same amount for every hour she works, how many does she earn per hour to mow lawns

$8/hr

Step-by-step explanation:

We're to find the hourly mowing rate, r.

Write and solve an equation in r:

2.5r + 4.25r = $54 total.

                                             $54

Then 6.75r = $54, and  r = = 8.

                                              6.75

Naomi earns $8 per hour for her lawn mowing.

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so: