Answer:
30 seconds
Explanation:
Based on the information provided we can see that a single mathematical operation takes 1.5 x 10, if we complete this expression we can see that the single mathematical operation would take a total of 15 seconds. Therefore two operations would take double the amount of time so we can multiply this number of seconds by 2 to get the total amount of time it will take for both of these operations to complete.
15 * 2 = 30 seconds
