Question
18 years ago the average age of a family of four
members was 45 years. Two children were born in that span of 18 years. The present average age of the family remained unchanged. Among the two children who were born in between the 18 years, if the older child at present is 12 years more than the younger one, what is the respective ratio between the present age of the older child and the present age of the younger child?Solution
18 years ago, The sum of age of a family of four members = 45 × 4 = 180 years Now at present, The sum of age of four members = 180 + 18 × 4 =252 years Let the Present age of younger child be x years And the present age of older child = (x + 12) years Now, as per the question 252 + x + 12 + x = 45 × 6 2x = 270 – 264 2x = 6 x = 3 Hence the required ratio = (3+12) : 3 = 15: 3 = 5: 1
Which data analytics technique is suitable for handling missing data points in a dataset?
The dynamic memory allocation is the memory allocation done at the _________.
Which of these can be overloaded?
Which of the following is a valid token in lexical analysis?
What does a "Shared Lock" in a DBMS locking protocol allow?
Consider a 4-way set associative cache consisting of 128 lines with a line size of 64 words. The CPU generates a 20-bit address of a word in main memor...
In dynamic programming, what is memoization?
What is the minimum no. of variables/ features required to perform clustering?
What is the basic component of an electronic circuit that restricts the flow of current?
When designing a sequential circuit, what is the purpose of flip-flops or latches?
Relevant for Exams:
