A) 5 km
B) 7 km
C) 6 km
D) 8 km
Correct Answer: B
Solution :
(b): Let 'x' hrs on foot, (4-x) hrs on cycle Distance on foot = \[3.5\times x\] Distance on cycle =\[9\times \left( 4-x \right)\] \[\Rightarrow 3.5x+9\left( 4-x \right)=25\] \[\Rightarrow 36-5.5x=25\] \[\Rightarrow x=2\] \[\therefore 3.5x=7\] km on foot.You need to login to perform this action.
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