Starting at home, jessica traveled uphill to the grocery store for 18 minutes at just 20 mph. she then traveled back home along the same path downhill at a speed of 60 mph. what is her average speed for the entire trip from home to the grocery store and back?

Average speed of Jessica is 30 mph.

Step-by-step explanation:

As we know the formula to calculate the average speed is

Average speed =

Jessica traveled uphill to the grocery store for 18 minutes or hours at 20 mph.

So the distance traveled = Speed × time

                                         = 20 ×

                                         = miles

Now she traveled back with same path with the speed of 60 mph.

Time taken in back to home =

                                               =

                                               = 0.1 hours

Total distance covered = 6 + 6 = 12 miles

And total time taken =

                                  = 0.3 + 0.1

                                  = 0.4 hours

Therefore, average speed of Jessica =  

                                                             = mph

Average speed of Jessica is 30 mph.

mental cunning

explanation:

he is often referred to as a man of twists and turns

the ratio of white tiles to blue tiles is 48: 16. the ratio in it's simplest form is 3: 1.

step-by-step explanation:

ratio: take the first number and add a colon next to it, then add the second number after that. make sure the ratio order matches up with the written problem!

simplest form: we can simplify the ratio 48 : 16 by dividing both terms by the greatest common factor (gcf).

the gcf of 48 and 16 is 16.

divide both terms by 16:

48 ÷ 16 = 3

16 ÷ 16 = 1

reducing to simplest form:

48 : 16 = 3 : 1