Question

a submarine is at sea level it start to descend at the rate of 5m per minute how long would it take the reach 300 below sea-level

Answer 1

300÷5=60

1×60=60

60min=1hr

It take 1hr to reach 300 below sea level

Answer 2

AMSWER=

Length of submarine below sea level =5m

Total depth of water it has to go = 355m

(355-5)

=330

Rate of the submarine going in the water =10min

so, Time needed to go for the rest depth of water

330/10min

ANS =33minutes

HOPE IT HELPS