Problema Solution
Lawanda and Betty both drive the same distance to the shore. By driving 15 miles per hour faster than Betty, Lawanda can get there in 3 hours while Betty takes 4 hours. How fast does each drive?
Answer provided by our tutors
distance= time*speed
so,
Lawanda: 3(x+15)
Betty: 4x
so,
3(x+15)=4x
3x+45=4x
x=45 miles.
so,
Lawanda speed= 60mph
Betty speed= 45mph