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

Answer:

46 mph

Step-by-step 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

$\frac{40}{100}=\frac{x}{115}\\\frac{40*115}{100}=x\\ x=\frac{4600}{100}\\ x=46$

x=46 mph

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

Have a great day

Answer 2

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