Question

A 271⁄2-mile stretch of road needs repaving. A company bid on the repaving project, saying they could repave 21⁄4 miles of road per week. How many weeks will the company take to completely repave the stretch of road?

Answer 1

turn each number into an improper fraction

27 1/2 = (2*27+1 )/2  = 55/2

2 1/4 = (4*2+1)/4  = 9/4

55/2 divided by 9/4

copy dot flip

55/2 * 4/9

220/18

110/9                                       12*9 = 108

12    2/9  weeks

or if we round   13 weeks