To find how long it will take her to make 9 necklaces, you need to find how long it takes to make 1 necklace. To calculate this, you divide 2 hours by 12 necklaces which is 0.16 or 16/100 of an hour. Then you convert 16/100 of an hour to minutes by finding _/60 = 16/100. You can find this by using cross multiplication. (16*60 = 960, 960 <span>÷ 100 = 9.6) After doing so, you know that to make 1 necklace, it will take 9.6 minutes. Multiply 9.6 by 9 since you are making 9 necklaces which will be 9 times the number of minutes to make 1 necklace (9.6 minutes). Your ending result will be 86.4 minutes which is 1 hour and 26.4 minutes to make 9 necklaces.</span>
