Help in units of measurements?

Question

A jet spends 1 hour and 15 minutes flying passengers 215 mile from Washington, D.C, to Newark, New Jersey. How many miles per minutes and miles per hour is the jet traveling?

Study this problem. To find the solution for this problem, you must convert measurements from one unit to another. What is the ratio showing how fast the jet carries passengers between Washington, D.C, and Newark, New Jersey? State the time in the denominator as a decimal.

CAN SOMEONE ANSWER THIS ONE FOR ME? PLEASE!!!!!!!!!!!

Answer 1

distance is 215 miles

time is 1 hr, 15 minutes or 75 minutes or 1.25 hours - you should know how I arrived at these; 60 min = 1 hr so 1 hr 15 min = 60 + 15 min; 15 min/(60 min/hr) = 0.25 hr so 1 hr 15 min is 1 hr + 0.25 hr; understand what I did here before your proceed

speed in miles / hour is

215 miles / 1.25 hours

speed in miles / minute is

215 miles / 75 minutes

you can do the calc

Answer 2

1 hour and 15 minutes=


1.25 hours or 5/4 hour

the jet goes 215 miles in 5/4hours

which means it goes 43 miles in 1/4 hour
== 172 miles per hour

there are 60 minutes in an hour
so to find how many miles per second
you divide 60 minutes into 172 mph

= 2.86 miles per minute
(well really that last 6 repeats many times)
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that jet isn't very fast.
Probably because it spends most of its time accelerating and decelerating.