Data Sufficiency : Data sufficiency is a part of Logical reasoning. It must be noted that other reasoning concepts are used to form data sufficiency questions.
Data Sufficiency Age Related Problems : Problems on ages along with data sufficiency is a common topic from which questions are asked in almost all competitive exams.
Important Formulas : Given below are a few formulas related to the Problems on ages which will help to answer the questions in a faster way:
Directions : Each of the questions below consists of a question and two statements numbered I and II given below it. You have to decide whether the data provided in the statements are sufficient to answer the question.
Question : Read both the statement and give answer. What is Gagan's age ?
I. Gagan, Vinnal and Kunal are all of the same age.
II. Total age of Vinal, Kunal and Anil is 32 years and Anil is as old as Vinal and Kunal together.
Solution : (e) :
Answer :
According to statement 1 : we have G = V = K,
According to statement 2 : we have V + K + A = 32 and A = V + K.
Now using both the equations:
Putting V + K = A in V + K + A = 32, we have :
A + A = 32
or 2A = 32, A = 16 years
Now, V + K = A
V + K = 16 and V = K from statement 1.
Now, 2V = 16, V = 8 = K.
Thus G is also equal to 8, according to statement 1.
In the following problems, there is one question and two statements I and II given below the question. You have to decide whether the data given in the statements is sufficient to answer the question. Read all the statements carefully and find which of the statements is/are sufficient to answer the given question. Choose the correct alternative in each question. What is the ratio between the ages of mother and the son? I) The sum of their ages is ages is 50 years. II) 3 times the sum of their ages is equal to 5 times the mother's age. | |||
Right Option : D | |||
View Explanation |
In the following problems, there is one question and two statements I and II given below the question. You have to decide whether the data given in the statements is sufficient to answer the question. Read all the statements carefully and find which of the statements is/are sufficient to answer the given question. Choose the correct alternative in each question. What Anu's present age? I). Anu's present age is five times her son's present age. II). Anu's age two years hence will be three times her daughter's age at that time. | |||
Right Option : D | |||
View Explanation |
The problem below consists of a question and two statements numbered I and II given below it. You have to decide whether the data provided in the statement: are sufficient to answer the question. Read both the statements and give answer : Question: In which year was Rahul born ? Statements: I Rahul at present is 25 years younger to his mother. II Rahul's brother, who was born in 1964, is 35 years younger to his mother. | |||
Right Option : D | |||
View Explanation |
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