CUET > General Test Preparation for CUET > Tricks & Shortcuts to solve problems on Ages - 4
Tricks & Shortcuts to solve problems on Ages - 4 Video Lecture - General Test Preparation for CUET
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FAQs on Tricks & Shortcuts to solve problems on Ages - 4 Video Lecture - General Test Preparation for CUET
| 1. What are some tricks to solve problems on ages quickly and efficiently? |  |
Ans. Some tricks to solve problems on ages quickly and efficiently are:
- Use the formula: Age = Current Year - Year of Birth
- Break down complex age problems into smaller parts
- Use variables to represent unknown ages
- Utilize the concept of ratios and proportions when comparing ages
- Practice regularly to improve speed and accuracy.
| 2. How can I find the present age of a person if I know their year of birth? | |
Ans. To find the present age of a person if you know their year of birth, subtract the year of birth from the current year. For example, if someone was born in 1990 and the current year is 2022, their present age would be 2022 - 1990 = 32 years.
| 3. Can you provide an example of how to solve a problem on ages using the given tricks and shortcuts? | |
Ans. Sure! Let's say John is currently 25 years old, and his father is 55 years old. How old was John's father when John was born?
Solution:
Let's represent John's age as J and his father's age as F.
According to the given information, J = 25 and F = 55.
Since John's father is older, we know that F - J will give us the age gap between them.
So, John's father was F - J = 55 - 25 = 30 years old when John was born.
| 4. How can I solve age-related word problems that involve multiple people and different ages? | |
Ans. To solve age-related word problems involving multiple people and different ages, it is helpful to:
- Assign variables to represent the unknown ages of each person.
- Translate the given information into equations or ratios.
- Set up a system of equations or equations involving ratios.
- Solve the equations to find the unknown ages.
- Check the solution by ensuring that it satisfies all the given conditions in the problem.
| 5. Are there any other shortcuts or formulas that can be useful in solving age-related problems? | |
Ans. Yes, apart from the mentioned tricks, there are a few additional shortcuts and formulas that can be useful in solving age-related problems:
- Age differences remain constant over time, so if the age gap between two people is 10 years now, it will remain 10 years in the future or past.
- In problems involving three generations, the sum of the ages of the grandparents will be twice the sum of the ages of the parents.
- For problems involving the average age of a group, the sum of the ages divided by the number of people gives the average age.
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