Question
There are 7 people in a group. Average age of the group
decreases by 5 when two more people join the group. Find the average age of the new group. Statement I: Sum of the ages of the two people who joined later is 25 yrs. Statement II: Total of the ages of people originally was 245 yrs. In each of the following questions, a question is followed by two statement. Read all the statements and find that which statements are required to answer the question and answer accordingly.Solution
From statement I: People becomes 9 from 7, and average decreases by 5. Let ‘n’ is previous average and then ‘n - 5’ is new average. So Sum of ages of 2 new people becomes 9 × (n – 5) – 7 × n which is given 25 So 9 × (n – 5) – 7 × n = 25 So 9n – 45 – 7n = 25 or 2n = 25+45= 70 So, n = 70/2 = 35 So average of new group = 35 – 5 = 30 From statement II: Total age of 7 people is 245 years, so their average = 245/7 = 35 So, average of new group = 35 – 5 = 30 So answer can be determined by either of statement I or II.
Find the correctly spelt word as your answer.
Select the wrongly spelt word.
It's the only places in the city where one can see majestic birds like pelicans and painted storks in large numbers.
...In each group, one word is correctly spelt. Find the correct word.
- Find the incorrectly spelled word in the sentence:
The beneficiary was asked to submit the relevent documents before the deadline to process the tr... - In each of the questions below, a sentence is given with four words highlighted in bold in the sentence. Among these bold words, one may be wrongly spelt. ...
The more money the governments pored into it, the harder it was to walk away.
...But quite like his perfumes, this museum will always remain a timely celebration of his creations , a true jewel in his turban.
...In the question below, a sentence is given, four words have been highlighted in bold. Find out if the words are appropriate (grammatically and contextu...
Choose the word with correct spelling.
Relevant for Exams:
