SOLUTION: Wayne travels from A to B which is 50km. He then travels from B to C which is 40km. He takes 40 minutes to go from A to B. How fast does he have to travel from B to C such that the

Question 1041090: Wayne travels from A to B which is 50km. He then travels from B to C which is 40km. He takes 40 minutes to go from A to B. How fast does he have to travel from B to C such that the entire journey takes 1 hour and 10 minutes?
Please explain thoroughly thank you?,
Answer by josgarithmetic(39625) (Show Source): You can put this solution on YOUR website!
Put everything into a table of data.
RT=D is the travel rates rule relating R rate, T time, and D distance.

              RATE         TIME       DISTANCE
A to B         s                       50
B to C         r            t             40
TOTAL

Some cell values are not yet known but are filled using variables as shown in the table.
Time is in HOURS.

The time going from B to C is simple to find.

The question essentially asks for solution of r. The number for speed or rate s is not even needed.

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