Elisa can swim 10 laps in 20 minutes. At this same rate, Elisa can swim laps in 32 minutes.

16 laps

Step-by-step explanation:

10 laps in 20 minutes means that :

for 1 lap elisa swims for ( 20 /10 ) = 2 minutes

now you can cross multiply to get the answer for how many laps elisa can swim in 32 minutes

--- us the method of cross multiplication when there is one value that you need to find out .. if the rate of change is the same...

laps                     time

 1           :                 2

 x          :               32

32 * 1 = 2x

32 = 2x

x = 32/2

hence elisa takes 32 minutes to swim 16 laps

16 laps

Step-by-step explanation:

If Elisa can swim 10 laps in 20 minutes.

That’s 10 L = 20 mins

At this same rate Elisa can swim x laps in 32 mins

Therefore

10 laps = 20 mins

x laps = 32 mins

Cross multiply

20x = 10 x 32

20x = 320

Divide both sides by 20

20x/20 = 320/20

x = 16

Elisa can swim 16 laps in 32 minutes

to find the unit price, we must figure out the cost of one item (in this case one dish towel).   to do this, we divide the total price ($7.92) by the number of items bought (for this problem it is 8, because there are eight dish towels in one pack).  

$7.92/8 = $0.99

therefore, the unit price, or the price of one dish towel, is $0.99.

hope this !