On monday carla runs 2 5/8 in 15 minutes a. what is s average rate of speed in miles per hour ,for s run? show your work or explain how you know. on tuesday carla decides to jog instead of run and so decreases her average rate of speed by 20 percent b. how many miles does carla noh in 50 minuets on tuesday? show your work and explain how u know.

(a) 10.5 miles/hour

(b) 6.5 miles

Step-by-step explanation:

(a)

Carla runs

time taken by Carla=15 minutes=15/60 hours.

Hence Average rate of speed = total distance/total time

                                        =

Hence, the average rate of speed in miles per hour is 10.5 miles/hour.

(b)

on Tuesday Carla decides to jog instead of walk and decreases her speed by 20%(20/100=0.2).

so her speed=10.5-0.2×10.5

                     =8.4 miles/hour.

Now distance travelled by her in 50 minutes(50/60 hours)=8.4×(50/60) miles

                  =6.5 miles.

ok

step-by-step explanation: