A plane traveled from California and back, taking one hour longer on the way out than on the way back. The average speed out was 300 mph, and the average speed on the way back was 350 mph. The trip took for 7 hours, with an average speed of 300 mph.
The cost of each ticket is calculated by dividing the one-way distance by the time taken. The solution is Option D, which is the correct answer.
Another example is a plane traveling 580 miles to Ankara and back. The trip was with the wind, taking 5 hours, and the trip back was into the wind, taking 10 hours. The average speed out was 300 mph, and the average speed on the way back was 350 mph. The trip took for 7 hours, with an average speed of 300 mph.
Blitzkrieg, or “lightning war”, was the essence of German military strategy during much of the Second World War. The plane’s average speed out was 300 mph, and the trip took one hour longer on the way out than on the way back. The price of each ticket is calculated using the formula 300t = 350 (t-1), -50t = -350, t = -350/-50, and t = 7 hours.
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