batman972 batman972

27-01-2021
Mathematics

contestada

Eric's mother drives to work in 20 minutes when driving at her usual speed. When traffic is bad,she drives 10 miles per hour slower, and the trip takes 10 minutes longer. What is Eric's mother's usual speed

Respuesta :

Gokuxy812 Gokuxy812

02-02-2021

Answer:

Pretty Sure it’s 20mph

Step-by-step explanation:

X/20=x-10/30

30x=20x-200

30x=20x-200

-20x

10x=-200

Divied by ten on both sides.

x=-20

20mph

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