Answer:
[tex]4c+20t=4.00...(1)[/tex]
[tex]10c+5t=5.50...(2)[/tex]
Step-by-step explanation:
Let c be cost of each call and t represent cost of each text message.
We have been given that last week Ricki made 4 call and sent 20 text messages which cost him $4.
Cost of 4 calls would be [tex]4c[/tex].
Cost of 20 text messages would be [tex]20t[/tex]
Total cost id $4.00.
We can represent this information in an equation as:
[tex]4c+20t=4.00...(1)[/tex]
We are also told that this week he made 10 calls and sent 5 text messages which cost him $5.50.
Cost of 10 calls would be [tex]10c[/tex].
Cost of 5 text messages would be [tex]5t[/tex]
Total cost id $5.50.
We can represent this information in an equation as:
[tex]10c+5t=5.50...(2)[/tex]
Therefore, our required system would be:
[tex]4c+20t=4.00...(1)[/tex]
[tex]10c+5t=5.50...(2)[/tex]
