- A18 m
- B19 m
- C20 m
- D21 m
Step-by-Step Solution
When A runs 100, B runs 90; C runs 90% of B's distance = 81 m. A beats C by 19 m. The leads multiply, they don't add.
Answer: B) 19 m
Kavya argues: "In a 100 m race A beats B by 10 m and B beats C by 10 m, so A must beat C by 20 m." By how much does A really beat C?
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