During a 45km bike ride, a cyclist drinks water at a rate of 500mL per hour. If the cyclist averages 30km/hour during this ride, how many millilitres of water do they need to take with them?
45 Km. distance can be covered in:
45/30=1.5 hours to cover the distance. Since the cyclist consumes 500ml. of water every hour, then he/she needs: 1.5 X 500=750ml of water needed.