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
1. “Being shy and
P. flabbergasted by the
Q. reserved by nature,
R. a farmer naturally gets
S. security at the ga...
Which of the following is the fourth sentence after rearrangement?
The furniture in the living room (1)/ need to be rearranged (2)/ because the space looks (3)/ too cluttered. (4)/ No error (5)
1. Even though plants and animals
P. if their occurrence is natural,
Q. can adapt themselves to
R. changes in nature
...Sentences of a paragraph are given below in jumbled order. Arrange the sentences in the correct order to form a meaningful and coherent paragraph.
<...Given below are six sentences. A and F are the first and the last sentences. The rest of the sentences namely B, C, D and E are jumbled. Select the opt...
Sentences of a paragraph are given below in jumbled order. Arrange the sentences in the correct order to form a meaningful and coherent paragraph.
<...In the following question, the 1st and the last sentences of the passage are numbered 1 and 6. The rest of the passage is split into four parts and nam...
A. The rate of suicidal deaths has been increasing ever since.
B. His investigation of suicide was, in fact, the first sociological study to use ...
Which of the following will be the THIRD sentence after rearrangement?
Relevant for Exams:
