Plan a costs $20 a month with an additional 10 cents. Plan b costs $10 a month with an additional 20 cents. How many minutes for these two plans to be the same?

Question

 I need help solving this now,because it is do tomorrow morning.

Answer 1

Cost of plan A

 

total cost=y

number of minutes used in paln A= x

 

y= 0.10x + 20

 

 

Cost of plan B

total cost=y

number of minutes used in paln B= x

 

y=0.20 x +10

 

equate bith equation

0.10x+20=0.20x+10

 

10=0.10x

x=100

 

 100 minutes for  both plan are same