Question

Trevor's dad decided to get him a cell phone for his birthday. Cell Plus has a plan that costs $20.00 per month plus an additional $0.06 per minute. Cell Best has a plan that costs $30.00 per month plus an additional $0.05 per minute. How many minutes can Trevor talk and both cell plans cost the same amount?
Answer
500
50
1000
100

Answer 1

\[20 + .06x = 30 + .05x\]
\[(20 + .06x) - 20 = (30 + .05x) - 20\]
\[( .06x) - .05x = (10 + .05x) - .05x\]
\[\frac{0.01x}{.01} = \frac{10}{.01}\]
\[x=1000\]