The speed of a motor boat is 20 km/hr. for covering the distane of 15 km the boat took 1 hour more for upstream than downstream. Let speed of the stream be x km/hr, then speed of the motorboat in upstream will be-
A. (20-x)km/hr
B. (20+x)km/hr
C. 20 km/hr
D. 2 km/hr
JUIBA (Unit-G)Set-Dমানসিক দক্ষতা(IQ)গাণিতিক সমস্যাIQ-4 (Topic Practice)JU - ⚡ অনলাইন প্রশ্নব্যাংক দেখুন 💥
সঠিক উত্তরঃ
A.
(20-x)km/hr
Explanation:
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