Verizon has two different cell phone plans. The cost, Y, of plan A is $11 a month Plus $.21 per minute. The cost, Y, of Plan B is $20 a month plus $.10 per minute. After how much time to the nearest minute will the cost of plan a B equal to the cost of Plan B?

Question

Can you help me with this

I figured X equals minutes
Why equals total cost

I would set up my equation as
11+ 21X equals Y
20+.1 0X equals Y

I am not sure where to go from this point, please help !!!! Thank you

Answer 1

11 + .21m = 20 + .10m

Solve for m.

Answer 2

I set up the equation like you said
11+.21m =20+.10m
-.10m. -.10m
11+ .11m =20
-11. -11
.11m/.11=. 9/.11

This doesn't seem correct