Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test Quantitative Aptitude Speed Time and Distance Boat and River
A boat rowed down a river at 21 kmph and rowed up the river at 9 kmph. What is the speed of the stream?
1
4 kmph
2
6.5 kmph
3
5 kmph
4
More than one of the above
5
None of the above