Question

Elena walked 20 minutes more than Lin. Jada walked twice as long as Elena. Jada walked for 90 minutes. The equation 2(x +20) = 90 describes this situation. What statement matches the (x+20) in the equation

Answer 1

(x+20) explains the elena walked 20 minutes more than Lin

Explanation:

(x+20) explains the elena walked 20 minutes more than Lin

As given in the question that elena walked 20minutes more than lin means if elena walked x then lin walked (x+20) and also jada walked twice as long as elena means 2(x+20) and according to question jada walked 90 minutes means 2(x +20) = 90

Answer 2

The statement which matches "x+20" in the equation is the the time walked by Elana.

Explanation:

According to the question.

Elena walked 20 minutes more than Lin.

Jada walked twice as long as Elena.

Jada walked for 90 minutes.

So,

Lets Lin walked for 'x' minutes.

and

Elana walked for 'x+20' minutes.

The equation can be:

⇒
`2(x+20)=90`

⇒
`2x+40=90`

⇒
`2x+40-40=90-40`

⇒
`2x=50`

⇒
`(2x)/(2) = (50)/(2)`

⇒
`x=25` minutes

So.

Lin walked for ''x'' minutes that is 25 minutes.

Elana walked for ''(x+20)'' minutes that is 45 minutes.

And Jada walked for ''2(x+20)'' that is 90 minutes.

And we see that the statement Jada walked for 90 minutes is proved in numerical way.

The statement which matches "x+20" in the equation is the the time walked by Elana.