Question 1161269
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Solve by elimination method.
A cabin cruiser travels 20 miles in the same time that a power boat travels 40 miles. The cruiser travels 5 mph slower than the power boat. Find the speed of each boat
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Cruiser,  r-5 speed, distance 20, time x;

Boat,  speed of r, distance 40, time x;


Elimination not the best method for this example problem.
{{{system((r-5)x=20,rx=40)}}},...



Better set-up can be  {{{20/(r-5)=40/r}}}.