Question

3.subtract 20min 30sec from 30min 20 sec show how to do​

Answer 1

Answer:

9 min 9 sec

Step-by-step explanation:

Just put decimal values like 30.20-20.30...

hope this helps...

Answer 2

Answer:

9 min 50 sec

Step-by-step explanation:

Firstly , convert 20 min 30 sec and 30 min 20 sec in seconds:

one minute = 60 seconds

( 20 × 60 ) + 30 = 1230 sec

( 30 × 60 ) + 20 = 1820 sec

subtract 1820 and 1230:

1820-1230 = 590 sec

Now , convert 590 seconds Into minutes: one second = 1 / 60 min

= 590/60

= 9.(5/6)-------{mixed fraction}

= 9 min 50 sec

Thank You

hope this will help you..