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⟩ A person who decided to go weekend trip should not exceed 8 hours driving in a day average speed of forward journey is 40 mph due to traffic in Sundays the return journey average speed is 30 mph. How far he can select a picnic spot?

let x mile be the distance of picinic spot.onward jrny =x/40 hrreturn jrny = x/30 hrtotal x(1/40+1/30)=8 hr so x=137.14 mile

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