Question

В) 8ч 15 мин - 2ч 45 мин+120с​

Answer 1

Ответ:

1час-60минут

60×8=480(минут)

480+15=495(минут)

2ч=120(минут)

120+45=165(минут)

495минут-165минут 120сек.=330мин.120сек

Answer 2

To calculate this expression, let's first convert all the times to minutes:

8 hours and 15 minutes = 8 * 60 + 15 = 495 minutes 2 hours and 45 minutes = 2 * 60 + 45 = 165 minutes

Now, we can perform the subtraction:

495 minutes - 165 minutes = 330 minutes

Finally, let's add the 120 seconds to the result:

330 minutes + (120 seconds / 60 seconds per minute) = 330 minutes + 2 minutes = 332 minutes

So, the result of the expression is 332 minutes.