Question

How many seconds are there in 3 hours 30 minutes?

• A. 12600
• B. 12500
• C. 12000
• D. 12400

Answer 1

The correct option is A 12600

$1\text{hr}=60\text{min}$
$3\text{hr}30\text{min}=(3\times 60)+30\text{min}$
$=210\text{min}$

$1\text{min}=60\text{s}$
$210\text{min}=210\times 60\text{s}$
$=12600\text{s}$

Thus, there are 12600 seconds in 3 hours and 30 minutes.