UGC-NET-Paper1

### Step 1: Define Variables
Let the speed of the steam engine train be **S**.
The speed of the electric train is **25% more**, so its speed = **1.25S**.
Time taken by the steam engine = **4 hours 25 minutes** = **4 + 25/60** = **4 5/12 hours**.

### Step 2: Compute Time for the Electric Train
Since time is inversely proportional to speed:

Time taken by the electric train = (Time taken by steam engine × Speed of steam engine) / Speed of electric train

= (4 5/12 × S) / (1.25S)
= (4 5/12) / 1.25
= (53/12) ÷ (5/4)
= (53/12) × (4/5)
= (53 × 4) / (12 × 5)
= 212 / 60
= **3 8/15 hours**

### Final Answer:
**(4) 3 8/15 hr**