sandra tiles 5/4 square yards in 1/3 hour

Question

find unit rate

Answer 1

5/4 sq yds     =  x sq yds

 1/3 hr                 1 hr

 

             or

 

 

5/4 sq yds x 1 hr   = x sq yds  x 1/3 hr

 

                    then

 

x = 5/4 sq yds x 1 hr      =   5/4 sq yds x 1 hr x    3             the hr units cancel out

           1/3 hr                                                   1 hr

 

                         leaving

 

x = 5 sq yds  x  3    =   15 sq yds   = 3.75 sq yds per hr

 

        4                             4

 

Answer 2

5/4 / 1/3             to divide by a fraction multiply by its inverse

5/4 · 3

15/4                    Sandra lays 3.75 tiles in one hour.