Question

Christian drives 120 miles in the same length of time while Julius drives 200 miles. If the speed of Julius exceeds that of Christian by 35mph, find the speed of each

Answer 1

since speed = distance/time,

120/c = 200/j
j = c+35

so,

120/c = 200/(c+35)
120(c+35) = 200c
120c + 120*35 = 200c
80c = 120*35
c = 3/2 * 35 = 52.5