4. Sinilizwe buys a R50 rand phone card that allows him to speak for 62 minutes. 4.1 Calculate the cost per minute of using the phone card to make a call. 4.2 If Sinilizwe speaks for 27 minutes, how much money is left on the card?

Let's solve each part of the problem step by step. ### **4.1 Calculate the cost per minute of using the phone card to make a call.** **Given:** - Total cost of the phone card = **R50** - Total minutes available = **62 minutes** **Calculation:** \[ \text{Cost per minute} = \frac{\text{Total Cost}}{\text{Total Minutes}} = \frac{R50}{62 \text{ minutes}} \approx R0.81 \text{ per minute} \] **Answer:** The cost per minute is approximately **R0.81**. --- ### **4.2 If Sinilizwe speaks for 27 minutes, how much money is left on the card?** **Given:** - Cost per minute = **R0.81** (from part 4.1) - Minutes spoken = **27 minutes** - Initial card balance = **R50** **Calculation:** 1. **Total cost for 27 minutes:** \[ \text{Total Cost} = \text{Cost per minute} \times \text{Minutes} = R0.81 \times 27 \approx R21.87 \] 2. **Money left on the card:** \[ \text{Money Left} = \text{Initial Balance} - \text{Total Cost} = R50 - R21.87 \approx R28.13 \] **Answer:** After speaking for 27 minutes, approximately **R28.13** remains on the card.