Hello, Itsbaxagain!

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!