Problema Solution
Plan A: $35 monthly charge+10 cents per text message
Plan B: $18 monthly charge+20 cents per text message
how many text messages would you need to send in one month for the two plans to cost the same?
Answer provided by our tutors
let num of messages for which cost is same = x
so 35 + 0.1x = 18 + 0.2x
17 = 0.1x
x = 170