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Question
In a 800 metre race, A defeated B by 15 seconds. If A's speed was 8 km/hr, the speed of B was -
Options:
A .  $$\frac{{16}}{{27}}{\text{ km}}/{\text{hr}}$$
B .  $$\frac{{27}}{{16}}{\text{ km}}/{\text{hr}}$$
C .  $$7\frac{{17}}{{25}}{\text{ km}}/{\text{hr}}$$
D .  $$8\frac{{17}}{{25}}{\text{ km}}/{\text{hr}}$$
Answer: Option C

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