An individual is cycling at a speed of 30 km per hour. He catches his predecessor who had started earlier in three hours. What is the speed of his predecessor who had started 3 hours earlier?
বিকল্পসমূহ (নিজের উত্তর যাচাই করতে ক্লিক করুন):
সঠিক উত্তর
ক (15 kmph)
বিস্তারিত ব্যাখ্যা ও বিশ্লেষণ:
Solution:
The distance covered in three hour = 3 × 30 = 90 km
Time taken by first individual = (3h + 3h) = 6h
Then, the speed of predecessor, = 90/6 kmph
= 15 kmph.
