If Mrs Shipepe earns M600 in two weeks, how long would it take her to earn M1 350? A car travels 350 km in 3 1/2 hours. How far will it travel, at the same speed, in: 1.5 hours 6 hours 135 minutes?

Shipepe's earnings per week.
She earns M600 in 2 weeks.

$$\text{Earnings per week} = \frac{\text{M600}}{2 \text{ weeks}} = \text{M300 per week}$$

$$\text{Time} = \frac{\text{Desired earnings}}{\text{Earnings per week}} = \frac{\text{M1 350}}{\text{M300 per week}} = 4.5 \text{ weeks}$$

It would take her 4.5 weeks to earn M1 350.

2. Car Travel

The car travels 350 km in $3\frac{1}{2}$ hours.

$$\text{Speed} = \frac{\text{Distance}}{\text{Time}} = \frac{350 \text{ km}}{3.5 \text{ hours}} = 100 \text{ km/h}$$

a) How far will it travel in 1.5 hours?

$$\text{Distance} = \text{Speed} \times \text{Time} = 100 \text{ km/h} \times 1.5 \text{ hours} = \boxed{\text{150 km}}$$

b) How far will it travel in 6 hours?

$$\text{Distance} = \text{Speed} \times \text{Time} = 100 \text{ km/h} \times 6 \text{ hours} = \boxed{\text{600 km}}$$

c) How far will it travel in 135 minutes?
First, convert 135 minutes to hours.

$$135 \text{ minutes} = \frac{135}{60} \text{ hours} = 2.25 \text{ hours}$$

Now, calculate the distance.

$$\text{Distance} = \text{Speed} \times \text{Time} = 100 \text{ km/h} \times 2.25 \text{ hours} = \boxed{\text{225 km}}$$