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What is Three-Quarter an Hour?
Grade Level:
Class 2
All STEM domains, Finance, Economics, Data Science, AI, Physics, Chemistry
Definition
What is it?
Three-quarter an hour means three parts out of four equal parts of an hour. Since one full hour has 60 minutes, three-quarter an hour is 3/4 of 60 minutes.
Simple Example
Quick Example
If your favourite TV show starts in three-quarter an hour, it means you have 45 minutes to get ready. You can quickly finish your homework or help with a small chore before the show begins.
Worked Example
Step-by-Step
Let's find out how many minutes are in three-quarter an hour.
1. We know that 1 hour = 60 minutes.
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2. 'Three-quarter' means 3/4.
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3. So, we need to find 3/4 of 60 minutes.
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4. Multiply 3/4 by 60: (3/4) * 60.
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5. First, divide 60 by 4: 60 / 4 = 15.
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6. Now, multiply the result by 3: 3 * 15 = 45.
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7. So, three-quarter an hour is 45 minutes.
Answer: 45 minutes
Why It Matters
Understanding fractions of time is crucial in many fields. From planning train schedules in Indian Railways to managing project deadlines in IT companies, knowing three-quarter an hour helps with precise timing. Even scientists at ISRO use exact time calculations for satellite launches!
Common Mistakes
MISTAKE: Thinking three-quarter an hour is 3 minutes or 30 minutes. | CORRECTION: Remember that 'quarter' relates to dividing an hour (60 minutes) into four equal parts, not just taking the number 3.
MISTAKE: Calculating 1/3 of an hour instead of 3/4. | CORRECTION: Always pay attention to the numerator and denominator. 'Three-quarter' means 3 out of 4 parts, not 1 out of 3.
MISTAKE: Forgetting that an hour has 60 minutes, not 100. | CORRECTION: Time is based on 60 minutes per hour, so all calculations for fractions of an hour must use 60 as the total.
Practice Questions
Try It Yourself
QUESTION: If a bus journey takes three-quarter an hour, how many minutes does it take? | ANSWER: 45 minutes
QUESTION: Your friend promised to call you in half an hour, but now says they will call in three-quarter an hour. How many more minutes do you have to wait from the original half-hour time? | ANSWER: 15 minutes
QUESTION: A chef needs to bake a cake for one and a half hours. If the cake has already baked for three-quarter an hour, how many more minutes does it need to bake? | ANSWER: 45 minutes
MCQ
Quick Quiz
How many minutes are there in three-quarter an hour?
30 minutes
45 minutes
3 minutes
60 minutes
The Correct Answer Is:
B
One hour is 60 minutes. Three-quarter an hour means 3/4 of 60 minutes, which is (3/4) * 60 = 45 minutes. Options A, C, and D are incorrect calculations.
Real World Connection
In the Real World
When you book a slot for a cricket net practice or a doctor's appointment online, the time slots are often given in fractions of an hour. For example, a 45-minute slot means three-quarter an hour. Even delivery apps like Swiggy or Zomato show estimated delivery times in minutes, which are often fractions of an hour.
Key Vocabulary
Key Terms
HOUR: A unit of time equal to 60 minutes | MINUTE: A unit of time, 1/60th of an hour | FRACTION: A part of a whole, represented by a numerator and a denominator | QUARTER: One of four equal parts
What's Next
What to Learn Next
Now that you understand fractions of an hour, you can learn about other fractions of time, like half an hour or one-third of an hour. This will help you manage your daily schedule and understand time better!
