Greg took first place in eight out of fifteen bodybuilding competitions he entered At this rate how many contests will he need to enter to win forty?
As 8 wins out of 15 is equal to 40 wins out of 75.
The Decathlon is comprised of Ten (10) events. The Pentathlon is comprised of Five (5) events. There are a combined fifteen (15) events. However, the pentathlon's five events are also encompassed within the decathlon as well. Therefore, technically there are only Ten (10) unique events between the two competitions.