Question

Solve with explanation please for no a and b URGENT

Answer 1

(a) It is seen that for 30$ talk time is 100min

so for per min charges is

30/100 = 0.3$ or 30 cent/min

(b)0.3$ for 1 min

so for 51.8 $ talk time will be

= 51.8÷0.3

=172.67 min