Class 7 – Math Olympiad Integers Question 8

Class 7 Math Olympiad Integers Question 8

A submarine submerges at the rate of 5 m/min. If it descends from 20 m above the sea level, how long will it take to reach 250 m below sea level?

  1. 54

  2. 64

  3. 74

  4. 44

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