Answer:
170
Step-by-step explanation:
Let the number of cell phones be x
2 : 3 = 68: x
Product of extremes = product of means
2 * x = 68 * 3
x = [tex]\frac{68*3}{2}[/tex]
= 34 * 3
x = 102
Number of phones = 102 + 68 = 170