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jenyasd209 [6]
3 years ago
11

peg and larry purchased "no contract" cell phones. Peg's phone cost $25 plus $0.25 per minute. Larry's phone cost $35 plus $0.20

per minute. After haw many minutes of use will Peg's phone cost more then Larry's phone?
Mathematics
2 answers:
sukhopar [10]3 years ago
4 0
Do you have a graphing calculator?
valina [46]3 years ago
4 0

Solution:

Peg's phone cost $25 plus $0.25 per minute.

Larry's phone cost $35 plus $0.20 per minute.

Let Peg's phone cost more then Larry's phone after t minutes.

Then we can write

25+0.25t=35+0.20t\\
\\
35-25=0.25t-0.20t\\
\\
10=0.05t\\
\\
t=200

Hence Let Peg's phone cost more then Larry's phone after 200 minutes.

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