Let: .A certain 18-hole golf course has par-3, par-4 and par-5 holes.
There are twice as many par-4 holes as there are par-5 holes.
How many holes of each type are there if a golfer has par on every hole for a score of 70?
There are 18 holes on the course: .
There are twice as many as
A golfer made par on every hole for a score of 70: .
. . . Go for it!