Help please ty! Andrew can run the forty yard dash in 1/2 the time that Brett can. If the sum of the two boys' times is 16.2 seconds, how many seconds does it take Brett to run the forty yard dash?

Please explain how you got your answer, it would help a lot.

10.8 seconds for brett i’m pretty sure

Step-by-step explanation:

brett took 10.8 seconds

Step-by-step explanation:

brett takes 2/3 of the total amount of time to run the forty yard dash

andrew takes 1/3 of the total amount of time to run the forty yard dash

if you divide 16.2 by 3 you get 5.4 which is 1/3 of the total amount of time which is Andrew's time

multiply 5.4 times 2 to get brett's time - 10.8

simplifying

5(x + -6) = 2(x + 3)

reorder the terms:

5(-6 + x) = 2(x + 3)

(-6 * 5 + x * 5) = 2(x + 3)

(-30 + 5x) = 2(x + 3)

reorder the terms:

-30 + 5x = 2(3 + x)

-30 + 5x = (3 * 2 + x * 2)

-30 + 5x = (6 + 2x)

solving

-30 + 5x = 6 + 2x

solving for variable 'x'.

move all terms containing x to the left, all other terms to the right.

add '-2x' to each side of the equation.

-30 + 5x + -2x = 6 + 2x + -2x

combine like terms: 5x + -2x = 3x

-30 + 3x = 6 + 2x + -2x

combine like terms: 2x + -2x = 0

-30 + 3x = 6 + 0

-30 + 3x = 6

add '30' to each side of the equation.

-30 + 30 + 3x = 6 + 30

combine like terms: -30 + 30 = 0

0 + 3x = 6 + 30

3x = 6 + 30

combine like terms: 6 + 30 = 36

3x = 36

divide each side by '3'.

x = 12

simplifying

x = 12

this should .