The answer is 7 3/4 inches.
I noticed the word "train" in the problem and I knew I had to help you! :)
Sari did not use the greatest common factor in the equation.
Answer:
956.73
Step-by-step explanation:
0.3% = 0.003
1-0.003 = 0.997
49/6 = 8 r1 (use 8 because decay is not continuous)
0.997^8 = 0.97625...
0.97625... x 980 ≈ 956.73