Time Calculations

Understanding Time Calculations

Converting Between Minutes and Hours

• The video introduces time questions, focusing on converting between minutes and hours, emphasizing that there are 60 minutes in one hour.

• To convert 180 minutes into hours, divide by 60. Thus, 180 minutes equals 3 hours.

• The process for changing larger minute values to hours involves dividing by 60; conversely, to convert hours to minutes, multiply by 60.

Practical Examples of Time Conversion

• For converting two and three-quarter hours into minutes:

• Two hours = 120 minutes

• Three quarters of an hour = 45 minutes

• Total: 165 minutes.

• Example question: Convert 600 minutes into hours. Dividing gives us a result of 10 hours.

Using the Calculator for Time Conversion

• Demonstrates using a calculator's time button to convert time:

• Inputting "zero hours" and "180 minutes" yields "three hours."

• Shows how to check conversions like four hours into minutes using the calculator.

Calculating Differences in Time

Finding Differences Between Times

• Example problem: Calculate the difference between two and one-quarter hours (2h15m) and three hours twenty-five minutes (3h25m).

• To find the difference:

• From 2h15m to reach 3h requires adding another 45 mins.

• Then add another 25 mins from there for a total of 70 mins difference.

Additional Practice Problems

• Another example asks for the difference between one and a half hours (1h30m) and two hours fifty-five minutes (2h55m), resulting in 85 mins needed.

Adding Time Duration

Film Duration Calculation

• A film starts at 8:05 PM lasting 96 mins.

• It takes 55 mins to reach 9 PM, leaving an additional 41 mins, leading to an end time of 9:41 PM.

Further Practice with Timed Events

• Another scenario begins at 7:50 PM, needing to calculate an addition of 85 mins:

• First reaching 8 PM, then adding remaining time leads us to conclude at 9:15 PM after calculating correctly with the calculator's time function.

Interpreting Timetables

Understanding Bus/Train Schedules

• Explanation on reading bus timetables where each column represents different buses with specific times listed for various stops.

How to Calculate Travel Time Using Timetables

Understanding Bus Timings

• The example discusses a bus leaving Canada Water at 5:55 AM and arriving at Tottenham Court Road at 6:36 AM. The total travel time is calculated as follows: 5 minutes until 6:00 AM plus 36 minutes to reach the destination, totaling 41 minutes.

Solving Another Travel Time Problem

• A new scenario presents a bus departing from Brixton Station at 21:33 (9:33 PM) heading to Marleybone Station, arriving at 22:07 (10:07 PM). The calculation involves finding the difference in time, which is determined to be 34 minutes. This includes 27 minutes until 10 PM and an additional 7 minutes to reach the final destination.

Converting Minutes into Hours

• The first question posed requires converting 210 minutes into hours. By dividing by 60, it simplifies down to 3.5 hours, or three and a half hours. This conversion process illustrates how to handle larger minute values effectively without a calculator.

Calculating Differences Between Times

• A problem asks for the difference between 3 hours 32 minutes and 4 hours 15 minutes, where a quarter of an hour equals 15 minutes. To find this difference, one must add up the necessary increments leading from one time to another, resulting in a total of 43 minutes added together from both segments of time calculations.

Analyzing Football Match Duration

• The transcript concludes with calculating the end time of a football match that starts at 4:30 PM, lasting for various segments including a halftime break. Adding up all durations results in needing to account for a total of 110 minutes, leading to an end time of approximately 6:20 PM after sequentially adding each segment's duration without relying on calculators initially but demonstrating how easy it can be with one afterward.