alleryایک آدمی 10 کلومیٹر فی گھنٹہ کی رفتار سے چلنے والی ٹرین کے اندر 40 کلومیٹر فی گھنٹہ کی رفتار سے آگے بڑھ رہا ہے۔ وہ زمین کی نسبت کتنی تیزی سے حرکت کر رہا ہے؟
A45 km/h
B40 km/h
C30 km/h
D50 km/h
Answer & Solution
Correct answer: D. 50 km/h
اسی سمت میں رفتار میں اضافہ ہوتا ہے، 40 + 10 = 50 km/h۔
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