The Baltimore Marathon features a relay race.
The times for each leg run by a winning team
are shown in the table at the right. What is
the total time it took this team to run all four
legs of the marathon?

Baltimore marathon winner results
Leg of Race .

Time Run
leg 1 .32 minutes 56 seconds
leg 2. 42 minutes 28 seconds
leg 3.34 minutes 34 seconds
leg 4.39 minutes 2 seconds

or

Step-by-step explanation:

Let S be the sum of the times for all winning team.

Given:

leg 1. 32 minutes 56 seconds.

leg 2. 42 minutes 28 seconds.

leg 3. 34 minutes 34 seconds.

leg 4. 39 minutes 2 seconds

We need to find the total time to run all four  legs of the marathon.

Solution:

Sum of the times for all winning team.

Substitute running times for all legs.

Now, we write the minutes and seconds separately.

Therefore, Total time taken by all four legs  or .

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:

yes

step-by-step explanation: