A person, who decided to go to weakened trip should not exceed 8 hours driving in a day. Average speed of forward journey is 40 m/h. Due to traffic in Sundays, the return journey average speed is 30 m/h. How far he can select a picnic spot? Choose the correct answer:
A) 120 miles  B) between 120 and 140 miles  C) 160 miles  D) 180 miles  E) 260 miles
let dist travelled be 2x. hence destination is at dist x   x/40+x/30=8   x=137.14   ANSWER:between 120 and 140 miles
<result>B</result>
A person, who decided to go to weakened trip should not exceed 8 hours driving in a day. Average speed of forward journey is 40 m/h. Due to traffic in Sundays, the return journey average speed is 30 m/h. How far he can select a picnic spot?