Question

Class 7th integers maths

Answer 1

Answer:

55 minutes

Step-by-step explanation:

It will take 3 mins to come to the ground level. Since, 30/10 is 3. To reach 520 meters below the ground level, it will take another 52 mins since 520/10 is 52. When you add the sums, you get 55. Thus, 55 mins