To find: The speed of a train.
The speed of a train is 30 mi/h, that is, option (F) is correct.
Given information: The speed of a car is 15 mi/h faster than the speed of a train. Also, the car and train are 150 m apart after 2 hours.
Concept used:
The relation between speed, distance, and time is
Calculation:
Consider the speed of the train as
So, according to the given statement, the speed of a car is
According to the relation between speed, distance, and time, the distance travelled by train and car in 2 h is
So, equate the sum of distances travelled by car and train to 150 and solve for
So, the speed of the train as
Hence, option (F) is correct.
Chapter 14 Solutions
High School Math 2015 Common Core Algebra 2 Student Edition Grades 10/11
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