allery6 کلومیٹر فی گھنٹہ کی رفتار سے ایک ٹرک 72 کلومیٹر کے راستے پر 1 اضافی گھنٹہ لیتا ہے۔ اس کی اصل رفتار کیا تھی؟
A20 km/h
B24 km/h
C30 km/h
D36 km/h
Answer & Solution
Correct answer: B. 24 km/h
72/(s-6) - 72/s = 1 دیتا ہے s(s-6) = 432، لہذا s = 24 km/h۔
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