Question

If you're driving one and a half miles per minute, slow down by 15 miles per hour, and then reduce your speed by one third, how fast are you going now?

Answer 1

50 miles per hour -
1.5 miles × 60 mins = 90 mph
90-15= 75
1/3 of 75 is 25
75-25=50 mph

Answer 2

Answer:

Speed is 50 miles per hour.

Step-by-step explanation:

Given : If you're driving one and a half miles per minute, slow down by 15 miles per hour, and then reduce your speed by one third,

To find : How fast are you going now?

Solution :

The relationship between time, speed and distance is

$\text{Distance}=\text{Speed} \times \text{ Time}$

You're driving one and a half miles per minute,

i.e,  $1.5\text{ miles} \times 60 \text{ minutes} = 90 \text{ mph}$

Slow down by 15 miles per hour,

Speed became $90-15=75\text{ mph}$

Then reduce your speed by one third,

$\frac{1}{3} \text{ of } 75= \frac{1}{3}\times 75=25 \text{ mph}$

Speed is 75-25=50 mph.