Answer: Bertie rode 1500 more meters than Valene.
Explanation:
1. Since we know that 1 kilometer=1000 meters, we can simply use the equation 3.5 x 1000, because Bertie rode 3.5 kilometers.
2. 3.5 x 1000 = 3500, so we now know that Bertie rode 3500 meters.
3. To find out how many more meters Bertie rode on his bike, we can use the equation 3500-2000, which is equal to 1500.
4. Bertie rode 1500 more meters than Valene.