, if Jeremy worked for 8 1/2 hours building model airplanes. If each airplane takes him 1 2/5 hours to make, how many models did he build?
To determine how many models Jeremy built, we need to divide the total time he worked by the time it takes him to make one model:
8 1/2 hours = 8 + 1/2 = 8.5 hours
1 2/5 hours = 1 + 2/5 = 1.4 hours
Number of models = Total time worked / Time taken to make one model
Number of models = 8.5 hours / 1.4 hours
Number of models = 6.07
Since Jeremy cannot make a fraction of a model, he would have built 6 models.