alleryএকটি 180 কিমি ট্রিপে 3.5 ঘন্টা লাগে: 60 কিমি 30 কিমি/ঘন্টা, 60 কিমি 60 কিমি/ঘন্টা। শেষ গতি?
A150 km/h
B120 km/h
C90 km/h
D100 km/h
Answer & Solution
Correct answer: B. 120 km/h
প্রথম দুটি ধাপে 2 + 1 = 3 ঘন্টা সময় নেয়, 60 ÷ 0.5 = 120 km/h এ 60 km এর জন্য 0.5 ঘন্টা বাকি।
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