On average seven Lego sets are sold in stores around the world every second. How many Lego sets have been sold in the last hour?

Respuesta :

2520 Lego sets sold around the world every hour
Since every hour last 3600 seconds; 25200 lego sets are sold an hour.

60 minutes= 3600 seconds 
3600 seconds *7 lego sets= 25200