35 laps in 84 minutes
42 laps in 96.6 minutes
and 38 laps in 102.6 minutes who drove the fastest

the amount you'd have after the work is $1.55

step-by-step explanation:

you subtract 95% from $31.

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: