Vishnu88 wrote:Two airplanes are 300 miles apart flying directly toward each other. One is flying at 200 miles per hr and the other at 160 miles per hr. how long will it take for the two to meet?
An easy strategy to follow for this kind of question will be much appreciated. Cheers!
a. 36 mins
b. 50 mins
c. 1 hr 12 mins
d. 1 hr 40 mins
e. 1 hr 41 mins
When elements work together to complete a task or to travel a distance, we can add their rates.
Since the two planes are traveling toward each other, they are working together to travel the distance of 300 miles.
Their combined rate = 200+160 = 360 miles per hour.
Time = d/r = 300/360 = 5/6 hours = 50 minutes.
The correct answer is
B.
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