Isabella arrived at the cinema at 16:40. Her friend Anthony arrived at 4:35 pm. Who arrived first?
We’re being asked to compare two different times, 16:40 and 4:35 pm. The time that Isabella arrived at the cinema is given in the 24-hour clock, 16:40. And the time that Anthony arrived, 4:35 pm, is given in the 12-hour clock. To compare these times, we need to make them both the same, either both in 24-hour format or both in 12-hour format.
We could change the time given for Anthony into the 24-hour format. To do this, we need to add 12 hours to Anthony’s time. We need to add 12 to 4:35. Four and 12 is 16. So, the time written in the 24-hour, or digital format, would be 16:35.
Isabella arrived at 16:40 and Anthony arrived at 16:35. They both arrive during the same hour, but Anthony arrived five minutes earlier. 35 is five less than 40. The person who arrived first is Anthony.