Question

The cost of making a telephone call is a fixed 30 cents for each plus 12 cents for each minute. Agnes made a call that lasted 8 minutes to Bianca. Twenty minutes later, Agnes made a call that lasted for 15 minutes to Carol. What is the total cost for the two calls that Agnes made? Give your first in cents than in N$?.)

Answer 1

To find the total cost of the two calls made by Agnes, we will calculate the cost of each call separately and then sum them up.

1. **Cost of the call to Bianca** (8 minutes):
- Fixed cost = 30 cents
- Cost per minute = 12 cents
- Duration = 8 minutes

Cost for the call to Bianca:
\[
\text{Total cost} = \text{Fixed cost} + (\text{Cost per minute} \times \text{Duration})
\]
\[
\text{Total cost} = 30 + (12 \times 8) = 30 + 96 = 126 \text{ cents}
\]

2. **Cost of the call to Carol** (15 minutes):
- Fixed cost = 30 cents
- Cost per minute = 12 cents
- Duration = 15 minutes

Cost for the call to Carol:
\[
\text{Total cost} = \text{Fixed cost} + (\text{Cost per minute} \times \text{Duration})
\]
\[
\text{Total cost} = 30 + (12 \times 15) = 30 + 180 = 210 \text{ cents}
\]

3. **Total cost for both calls**:
\[
\text{Total cost for both calls} = \text{Cost to Bianca} + \text{Cost to Carol}
\]
\[
\text{Total cost} = 126 + 210 = 336 \text{ cents}
\]

Now, to convert this total cost into Namibian Dollars (N$):
Assuming the conversion rate is 1 USD = 100 cents (the same would generally apply for N$ unless specified otherwise):

\[
\text{Total cost in N$} = \frac{336 \text{ cents}}{100} = 3.36 \text{ N$}
\]

Thus, the total cost for the two calls that Agnes made is **336 cents** and **3.36 N$**.