**MEDAL + FAN**

One phone plan charges a $20 monthly fee and $0.08 per minute on every phone call made. Another phone plan charges a $12 monthly fee and $0.12 per minute for each call. After how many minutes would the charge be the same for both plans?

A. 60 minutes
B. 90 minutes
C. 120 minutes
D. 200 minutes

Question

**MEDAL + FAN**

One phone plan charges a $20 monthly fee and $0.08 per minute on every phone call made. Another phone plan charges a $12 monthly fee and $0.12 per minute for each call. After how many minutes would the charge be the same for both plans?

A. 60 minutes
B. 90 minutes
C. 120 minutes
D. 200 minutes <--

Formula?

gorv · Answer

cost=20+x*0.08
another phone 
cost=12+x*0.12

gorv · Answer

x=minute of call
both to be equal
20+x*0.08=12+x*0.12

gorv · Answer

20+0.08x=12+0.12x
subtract 12 from both side
8+.08x=0.12x
subtact 0.08x from both side 
8=0.04x
divide by 0.04 both side

gorv · Answer

x=8/0.04=200

anonymous · Answer

@gorv Thanks! I'll fan you once my Openstudy client stops bugging out.

gorv · Answer

welcome