Answer: 90
Step-by-step explanation:
Total number of lunches sold = 450
Number of hamburgers = 40% of the total , that is
number of hamburgers = 40/100 x 450 = 180
number of pizza = 450 - 180 = 270
Therefore , the number of pizza lunches sold more than hamburgers will be
270 - 180 = 90
Therefore : 90 more pizza lunches were sold than hamburgers.
