Wednesday, August 1, 2012

Mathematical Word Problems -1. Rate

6:18 AM

 Mathematical Word Problems - 1

                          Rate

Rate × Time = Distance

 
Example 1
The distance that an object travels is equal to the product of the average speed at which it travels and the amount of time it takes to travel that distance.
Question:
If a car travels at an average speed of 70 kilometers per hour for 4 hours, how many kilometers does it travel?
Solution:
Since rate × time = distance, simply multiply 70 km/hour × 4 hours. Thus, the car travels 280 kilometers in 4 hours.


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