Question

subtract 15 minutes 45 second 40 minutes 20 second​

Answer 1

Answer:

Step-by-step explanation:

We know that-1min = 60sec.

So, 15 min = 15×60=900sec.

Similarly, in second- 40 min = 40×60=2400sec.

Now,

First is 15 min 45 sec = (900+45)sec

= 945sec.

In second- 40 min 20 sec= (2400+20)sec.= 2420 sec..

Now subtract-

(2420-945)sec. = 1475 sec. Or 24 min 35 sec.

Answer 2

Answer:

15*60=900 and 40*60=2440or 900+45=945 2440+20=2440

answer is -1495