A phone company offers two monthly plans. Plan A costs $16 plus an additional $0.16for each minute of calls. Plan B costs $24 plus an additional $0.12 for each minute of calls.

Answer 1

16 + .16m = 24 + .12m

8 = .04m

m = 8/.04 = 200 minutes per month is when both cost the same

=$48 =16+32 for A and 24+24 for B

use more than 200 minutes and B is cheaper

use less than 200 minutes A is cheaper

200 minutes = 3 1/3 hours per month

= 10/3/30 =1/3 hr = 1/9 hr= 18 minutes 40 seconds per day, for a 30 day month