alleryএকজন সাইক্লিস্ট 10 কিমি/ঘন্টা বেগে 20 কিমি, তারপর 20 কিমি/ঘন্টা বেগে 40 কিমি চালান। মোট সময়?
A3 ঘন্টা
B6 ঘন্টা
C5 ঘন্টা
D4 ঘন্টা
Answer & Solution
Correct answer: D. 4 ঘন্টা
দুটি পর্যায় লাগে 20 ÷ 10 = 2 ঘন্টা এবং 40 ÷ 20 = 2 ঘন্টা, মোট 4 ঘন্টা।
Keep practising Time, Speed and Distance
Browse all Time, Speed and Distance questions for RPF Constable, or explore more Arithmetic topics.
Related questions
Motion: combine the cluesMotion: choose the resultA boat’s still-water speed is 12 km/h. It covers 30 km downstream and 18 km upstream in 4 A 120 m train at 54 km/h overtakes a 180 m train moving the same way in 60 s. Slower trainTwo runners start together on a 400 m circular track at 5 and 3 m/s in the same direction.In a 200 m race A beats B by 20 m. A runs at 10 m/s. What is B’s speed?A boat moves at 12 km/h in still water; the stream is 3 km/h. Time for 27 km downstream anTrains 180 m and 220 m long move oppositely at 54 and 36 km/h. Time to cross completely?