(1) 8km (2)7km (3) 6 km (4)9km
Solution:
If the required distance be x km,then
x/3-x/4=1/2
⇒ 4x-3x/12=1/2
⇒ x/12=1/2
⇒ x= 6km
Then the option is (3) 6km
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