Introduce variables to represent items of interest in theproblem. For
example, (1) Let n be the number to be found, or (2) Let a beAlice’s
current age, or (3) Let r be the rate of the first car.
(2)
Write down an equation using the information given in theproblem. This
is the really important part for this particular assignment!
(3)
Solve the equation and find the value requested in theproblem.
The distance between A and B is 180 miles. An automobile at Astarts for B are the rate of 40 miles per hour at the same timethat an automobile at B starts for A at the rate of 50 milesper
hour. How long will it be before the automobiles meet?
A snail leaves A and travels at the rate of four inches perminute to B. At B the snail catches a ride on a turtle and iscarried back the A at the rate of ten inches per minute. If theround trip takes 14 minutes, what is the distance between A andB?
Two boats start at the same point, one goes straight north,the
other straight south. The first boat travels twice as fast asthe
second. After three hours they are 72 miles apart. Find therate
of the faster boat.
