A bird watcher on a cliff spotted a kingfisher 7 m above him. Earlier – InterviewSolution

1.	A bird watcher on a cliff spotted a kingfisher 7 m above him. Earlier he had seen it 11 mbelow. What was the kingfisher's change in altitude?
Answer» Change in kingfisher's altitude= 7 - (-11)= 7 + 11= 18 m

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