Answer:
- 3 hours
- 1 hour 45 minutes
- 300 miles
Step-by-step explanation:
1. The trains are moving toward each other at a total speed of 50 +20 = 70 miles per hour. Together, they cover the 210 mile distance in ...
time = distance/speed
time = 210 mi/(70 mi/h) = 3 h
The trains collide after 3 hours.
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2. The fly is closing with the freight train at a speed of 100 +20 = 120 miles per hour. Together, the fly and the train cover the initial 210 mile distance in ...
(210 mi)/(120 mi/h) = 7/4 h = 1 hour 45 minutes
The fly first meets the oncoming freight train after 1 h 45 min.
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3. The fly is flying for all three hours before the trains collide, so, at 100 miles per hour, will fly 300 miles.
Answer:
41.5675675676km/hour or 41.57km/hour
Step-by-step explanation:
158÷3.7=41.5675675676 or 41.57
Step-by-step explanation:
false
0 can't he greater then any integer.
Answer:
17
Step-by-step explanation:
If 3 times the quantity is 57, then the quantity is 57/3 = 19.
If 2 more than the number is 19, then the number is 17.