shelby loves to knit scarves. normally, it takes her 15 minutes to knit 5 inches of a scarf. she plans to…
shelby loves to knit scarves. normally, it takes her 15 minutes to knit 5 inches of a scarf. she plans to make a scarf that is 30 inches long. if she knits at the same rate, how many minutes will it take shelby to knit the scarf? minutes
Answer
Explanation:
Step1: Calculate knitting rate per inch
First, find out how many minutes it takes to knit 1 inch. Given it takes 15 minutes to knit 5 inches, so the time per inch is $15\div5 = 3$ minutes per inch.
Step2: Calculate total time for 30 - inch scarf
Since it takes 3 minutes to knit 1 inch and the scarf is 30 inches long, the total time is $3\times30=90$ minutes.
Answer:
90