Question 203170
2x+50 (Monday)
3x-10 (Tuesday)
You need to add monday and tuesday together... therefore the equ. would look like this 
Monday+Tuedsy = Total 
(2x+50)+(3x-10)= total in two days
x=20 find distance 
sub x=20 in where you see x's

(2(20)+50) +(3(20)-10)= total
90+50= 140 miles.

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