About This Set
Each of these 25 questions needs one method: change km/h to m/s, use a speed ratio, add the train's length to the platform's, or take half the sum of the downstream and upstream speeds. They are in mixed order, so read each one and first decide whether one thing is moving or two. Take about 25 minutes and finish the set before you check. Fewer than 20 right means you should go back to the topic section for each one you missed before Practice Set 2.