Question

A patrol man gives a driver speeding ticket if the driver speed is greater than 15% over the posted speed limit . If the speed limit is 40 mph what is the highest speed that a driver can go without receiving a ticket?

Answer 1

10%of 40=4 5% of 40=2 4+2=6 40+6=46 so the answer is 46mph

Answer 2

46 mph

Explanation:

Hello, I can help you with this.

According to the question the speed limit is 40 mph, if the driver speed is greater than 15% over the posted speed limit,so you need to find 115 of 40 mph

you can easily solve this by using a rule of three.

Step 1

if

40 mph⇔ 100%

x mph ⇔ 115%

x(115 % of 40)

do the relation and isolate x

`(40)/(100)=(x)/(115)\\(40*115)/(100)=x\\ x=(4600)/(100)\\ x=46`

x=46 mph

so, the highest speed that a driver can go without receiving a ticket 46 mph

Have a great day