What was the speed limit?

Question

Ken drove 69 mi/h when he was stopped by police. The police officer claimed that Ken exceeded the speed limit by 15%. What was the speed limit?

Answer 1

69=1.15*x where x is the speed limit

69/1.15=x

60=x

60 mph was the speed limit

Answer 2

L(1+.15)=69 mph 

 

Solve for the Limit, L=60 mph

 

check what is 15% of 60?

.15(60)=9 mph

 

So 60 plus this 9 equals the speed he was going