<PRE><B>Question 71287</B>
x/50+x/40=7.2
(40x+50x)/2000=7.2
90x/2000=7.2 now cross multiply
90x=2000*7.2
90x=14400
x=14400/90
x=160 miles to Disneyland
proof
160/50+160/40=7.2
3.2+4=7.2
7.2=7.2
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