SOLUTION: I don't know how to set the equations up. I tried using the box method. D=RT but I keep coming up with different numbers everytime. Mitzi Fulwood traveled for 2 hr at a constant

Question 144661: I don't know how to set the equations up. I tried using the box method. D=RT but I keep coming up with different numbers everytime.
Mitzi Fulwood traveled for 2 hr at a constant speed. Because of roadwork, she reduced her speed by 7 mph for the next 2 hr. If she traveled 206 mi, what was her speed on the first part of the trip?

Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
2x+2(x-7)=206
2x+2x-14=206
4x=206+14
4x=220
x=220/4
x=55 mph for the first 2 hours.
55-7=48 mph for the next 2 hours.
proof
2*55+2*48=206
110+96=206
206=206
RELATED QUESTIONS
How would I solve the equation listed below using the elimination method? I have tried,... (answered by nerdybill,jadi929)

My question is based on solving systems of equations by way of substitution x+2y=4... (answered by josgarithmetic)

1. Each year, I plant a fruit/vegetable garden in the spring. I grow a variety of... (answered by amoresroy)

Can anyone help me with the following problem? 36x^2=1 I cant figure out how to work... (answered by ankor@dixie-net.com)

Please help me solve this system of equations by the addition method: 6x+9y=-41... (answered by ankor@dixie-net.com)

There are 237 coins in a bag that total $52.90. There are nickels and dimes in the bad.... (answered by solver91311)

I tried using the method from the last problem, but I'm still coming up with the wrong... (answered by mananth)

Can someone help me solve this by the substitution method please? 5x+2y=-29 x=8-5y the (answered by richwmiller)

calculating 5sqrt3+ sqrt 27. I have tried multiple solutions to this problem as per the... (answered by Mathtut)