Question 506544
let distance from school to homebe x

speed while going home= 40 mph
time while going home = x/40
..
speed returning = 50 mph
time returning = x/50

Total time = time going + time returning
8 = x/40 +x/50
LCD = 200
multiply by LCD
200*8 = 5x+4x
1600= 9x
x= 177.7 ( round off)

time going home = 178/40= 4.45 hours
time returning = 178/50=  3.55 hours

4.45 + 3.55 =  8 hours
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