Distance = rate*time
Let distance from X to Y be 'd'
From the equation we can solve for 'time'
time = distance/rate
The total time it takes to go 50 mph ,then 40 mph is:
The total time it takes to go 45 mph round trip is:
We know that the round-trip at 45 mph takes half-hour shorter, so by adding '1/2' to its time it will be equal to the time to go 50 then 40.
Answer: The distance from X to Y is 900 miles.
If x is the first integer, then x+1 is the second. x(x+1)=132 or x^2+x-132=0. This factors as (x-11)(x+12)=0. Thus either x=11 or x=-12
<span>So either 11 and 12 or -12 and -11 will do.</span>
3/4 can be sliced from three pieces