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 letter cluster will replace the question mark (?) to complete the given series?
WFBI, UCWB, SZRU, ?
Four of the following five are somehow similar and therefore create a group. Which of these is not related to this group?
Wander, Saunter, Roam, ...
The sequence of folding a piece of paper and the manner in which the folded paper has been cut is shown below. Choose a figure which would most closely...
Given below is a statement followed by two possible reasons numbered I and II. Read the statement carefully and decide which of the two explain(s) the e...
Statements:
Some seeds are fruits.
Some fruits are jams.
All jams are desserts.
Conclusions:
I. Some jams are see...
The second number in the given number pairs is obtained by performing certain mathematical operation(s) on the first number. The same operation(s) are f...
Six students Lucas, Loren, Simon, Dolph, Vini and Fray are sitting around a circular table facing the centre. Lucas is sitting second to the left of Fra...
If a mirror is placed on the shaded line, which of the following options is the correct reflection of the given shape?
Read the direction carefully and answer the following question.
R ranks 23rd in a class of 76 students. What is his rank from the la...
Statement:Â
No musician is an architect.
All cricketers are musicians.
All players are architects.
Conclusion:Â
