Answer:
Let \[{{X}_{1}}\]and \[{{X}_{2}}\]be the distances of the two cliffs from the man. Then, \[2{{x}_{1}}=340\times 5\] \[=1700m\] \[\Rightarrow \] \[{{x}_{1}}=850m\] and \[2{{x}_{2}}=340\times 7\] \[=2380m\] \[\Rightarrow \] \[{{x}_{2}}=1190m\] \[\therefore \]distance between the two cliffs \[={{x}_{1}}+{{x}_{2}}\] \[=850+1190=2040m\]
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