Number of Minutes

[harpazo]

Distance = speed * time
=50*6=300 km
...
Time = distance / speed
Time = 300 /45
time = 6.66 hours
..
It takes 0.66 hours more
= 0.66 *60
= 39.6 minutes
= 40 minutes

Your reply is much easier to grasp.

 

[Otis]

I think solving your proportion is easy, too.

50(360) = 45(360 + m)

Divide by GCF.

10(360) = 9(360 + m)

Distribute. Subtract constant term.

10(360) - 9(360) = 9m

Simplify.

360 = 9m

40 = m

?

 

[harpazo]

I think solving your proportion is easy, too.

50(360) = 45(360 + m)

Divide by GCF.

10(360) = 9(360 + m)

Distribute. Subtract constant term.

10(360) - 9(360) = 9m

Simplify.

360 = 9m

40 = m

?

Nicely-done as well.