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1. A train can travel 50% faster than a car. Both start lost about 12.5 minutes while stopping at the stations. The speed of the car is :
- A. 100 kmph
- B. 100 kmph
- C. 100 kmph
- D. 100 kmph
Answer: Option C
Explanation:
ধরি, গাড়ির গতিবেগ x কিমি / ঘন্টা
ট্রেনের গাড়ির ( x + x × 500/100) = 3x/2 ঘন্টা
75x/x - 75/3x/2 = 12.5/60
75/x - 150/3x = 125/600
225 - 150 /3x = 125/600
125 × 3x = 600 × 75
x = 600 × 75 /125 × 3
x = 120
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