Question

Ricki has a prepaid cellphone.last week Ricki made 4 call and sent 20 text messages which cost him $4. This week he made 10 calls and sent 5 text messages which cost him $5.50. Write a system describing the number of calls, c, and the number of text messages, t, that Ricki made over the past two weeks

Answer 1

Answer:

$4c+20t=4.00...(1)$

$10c+5t=5.50...(2)$

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 $4c$.

Cost of 20 text messages would be $20t$

Total cost id $4.00.

We can represent this information in an equation as:

$4c+20t=4.00...(1)$

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 $10c$.

Cost of 5 text messages would be $5t$

Total cost id $5.50.

We can represent this information in an equation as:

$10c+5t=5.50...(2)$

Therefore, our required system would be:

$4c+20t=4.00...(1)$

$10c+5t=5.50...(2)$