Answer:
15 minutes 45 seconds.
Step-by-step explanation:
The train station clock runs too fast and gains 7 minutes every 4 days.
For 1 day, the clock gains [tex]\frac{1 * 7}{4}[/tex] = 1.75 minutes.
For 9 days the clock gains;
1.75 × 9 = 15.75 minutes
1 minute = 60 seconds
0.75 of a minute is equivalent to;
0.75 × 60 = 45 seconds
Hence the clock will have gained 15 minutes and 45 seconds after nine days.
