two planes simultaneously flew in opposite directions from the same place, one with the speed 650 and the other 600 mph. in how many hours distance between them was 5000 miles?
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distance = speed x time
The speed of separation is 400 + 250 = 650 miles per hour
Note that 'per hour' means for each of 1 hour
The target distance is 1625 miles
distance = speed x time
1625miles=(650.miles/1 hour)×time
Multiply both sides by 1 hour / 650miles . This turnes the
650.miles / 1 hour on the right of the = into 1
1625 miles × 1 hour/ 650miles = 1 × time
1625 / 650 hours = time
TIME TAKEN = 2 × 1/2 hours
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Answer:
totaly they took of 3 hours (2×½) hours
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