Answer:
The distance between the cities is 50*4.5 = 225 miles.
Step-by-step explanation:
Let "t" be the time spent on the first leg at the average speed of 50 miles per hour.
Then (t+0.5) is the time spent on the returning trip at the average speed of 45 miles per hour.
Since the distance is the same in both directions, you have an equation
50*t = 45*(t+0.5).
Simplify and solve it for "t".
50t = 45t + 22.5,
5t = 22.5
Divide both sides by 5
t = 22.5/5
= 4.5.
Thus we found the time spent at the speed 50 mph. It is 4.5 hours.
Thus the distance between the cities is 50*4.5 = 225 miles
Answer : 2 2/15
To begin you need to convert the fractions into something they both can go into. Sometimes it is easier to multiple the two denominator of the fractions, which in this case it is.
So, 3 times 5 is 15
This means your going to convert your fraction into 15th
1/3 is 5/15
This is because you need to times the bottom by 5 in order to get 15, so you need to do the same with the top.
1/5 is 3/15
This is because you need to times the bottom by 3 to get 15 so you do the same with the top
Next you just subtract the amounts separately
4-2 = 2
5/15 - 3/15 = 2/15
This means your answer is 2 2/15
He read 110 pages i think
