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CBSE Class 7 Answered

A submarine is at sea level. At 8 pm it begins to descend at the rate of 8 metre per minute. At what time it will be at -240 metre  
Asked by mohammedakbar85 | 27 Mar, 2019, 09:24: PM
answered-by-expert Expert Answer
8 space meter space rightwards arrow 1 space min
240 space meter rightwards arrow straight x space mins
straight x equals 240 over 8 equals 30 space mins
so space 8.30 space pm
Answered by Arun | 28 Mar, 2019, 09:34: AM
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