6. An athlete runs at a speed of 100 metres in 15 seconds. How long will it take him to run 160 metres at the same speed? 7. A worker in a pottery factory paints 6 mugs in one hour. How many mugs will she paint in one 8 hour workday? 8. John is laying tiles at a rate of \( 3 \mathrm{~m}^{2} \) per hour. How long will it take him to tile a room of \( 18 \mathrm{~m}^{2} \) ? 9. How far can you travel in 5,5 hours at a speed of \( 115 \mathrm{~km} / \mathrm{h} \) ? 10. Mercia is a typist and gets R9,50 for every page that she types. How many pages must she type to get R380? 11. The exchange rate is R8,98 per U\$. You have R50 000 that you want to convert to US\$. How many U\$ will you get? 12. Esther earned R1 750 for 12 days' work. Determine how much she would earn if she worked for 15 days.

1. The athlete’s speed is \[ \text{Speed} = \frac{100\, \text{m}}{15\, \text{s}}. \] The time to run 160 metres is \[ \text{Time} = \frac{160\, \text{m}}{100/15\, \text{m/s}} = 160 \times \frac{15}{100} = 24\, \text{s}. \] 2. The worker paints 6 mugs in 1 hour. In an 8-hour workday, she paints \[ 6 \times 8 = 48 \text{ mugs}. \] 3. John’s tiling rate is \[ 3\, \text{m}^2/\text{hour}. \] The time needed to tile an \(18\, \text{m}^2\) room is \[ \frac{18\, \text{m}^2}{3\, \text{m}^2/\text{hour}} = 6\, \text{hours}. \] 4. Traveling at \(115\, \text{km/h}\) for 5.5 hours, the distance traveled is \[ 115 \times 5.5 = 632.5\, \text{km}. \] 5. Mercia earns R9.50 per page. To earn R380, the number of pages needed is \[ \frac{380}{9.50} = 40 \text{ pages}. \] 6. With an exchange rate of R8.98 per US\$, converting R50\,000 yields \[ \frac{50\,000}{8.98} \approx 5567.93\, \text{US\$}. \] (Approximately 5568 US\$ if rounded to the nearest dollar.) 7. Esther earned R1750 for 12 days. Her daily earning is \[ \frac{1750}{12}\, \text{R/day}. \] For 15 days, she would earn \[ \frac{1750}{12} \times 15 = 1750 \times \frac{15}{12} = 1750 \times \frac{5}{4} = 2187.50\, \text{R}. \]