the distance d a train varies directly with the amount of time t that has elapsed since departure. If the train travels 475 miles in 9.5 hours, how many miles did the train travel after 4 hours?

100
200
232.5
200

Question

the distance d a train varies directly with the amount of time t that has elapsed since departure. If the train travels 475 miles in 9.5 hours, how many miles did the train travel after 4 hours?

100
200
232.5
200

anonymous · Answer

is it 200

anonymous · Answer

distance = 475
time = 9.5 hrs

since distance and time varies directly 

therefore in  9.5 hrs train travels 475 miles
=>         In 1 hr  train travels   475 / 9.5 miles = 50 miles

and in 4 hrs train travells 50*4 i.e 200 miles