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
How many elements are between ‘identical and ‘29’ in step III?
How many steps are required to rearrange the given input?
Which of the following would be the last step of the rearrangement?
The entry codes for which of the following batches of Tuesday will not change on Thursday?
What will be the 14th step for the following input?
Input: the rule changes will come into effect for
...Input for Qs. 6 - 10: 28 33 92 35 73 46 84 11
How many steps a...
Which step number is the following step?
Envelop 2 identical 13 unique 29 6 boss couple 12 happy 28
Which step number would be the following output?
words length alliance analysis 25 mythologic 41 important 54 76 87 96
How many steps are required to complete the given arrangement?
Which of the following elements is third to the left of the 10th element from the left in Step III?