How long will he take to cover the same distance if the wind slows him down to 2/3 of his regular speed?
Answer:
He covers 6 miles in 30 min, meaning his speed is 12 miles an hour. 2/3 of 12 is 8. So the wind slows him down to 8 miles an hour. Divide 6 with 8, that will give you 0.75 which is 3/4. 3/4 of an hour is 45 min. So the answer is 45 min to walk the distance of 6 miles up wind. Homework assignment?
Answer:
2/3 of his speed is 4 miles in 30 min (8 miles an hour) so, 8 miles an hour, for 6 miles. t=d/v=6/8=3/4=45 mins