Two friends A and B are $15 \text{ km}$ apart. They start walking towards each other simultaneously and meet in $1.5 \text{ hours}$. If A walks at $4 \text{ km/h}$, find the speed of B.

Options:

• A: $4 \text{ km/h}$
• B: $5 \text{ km/h}$
• C: $6 \text{ km/h}$
• D: $7 \text{ km/h}$

Related Practice Questions:

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