Question

Two competing cell phone companies have recently restructured their payment plans. Mobilama requires a $20 activation fee and charges $25 per month for their basic plan. Ringit Wireless requires no activation fee and charges $35 per month for their basic plan. When will the two plans be equal in cost?

Answer 1

Let’s let x = # of months

Mobil charges 25 per month (so 25x) plus a 20 fee (in total, 25x + 20)

Ringit charges 35 per month, no activation fee (35x)

So to find out when they are equal, set 25x + 20 = 35x and solve for x