Question
There are three classes P, Q and R. The average marks of
class P is 75. The average marks of class Q is 80. The average marks of class R is 85. The average marks of class P and Q is 77, the average marks of class Q and R is83. Find the approximate average marks of three classes.Solution
By allegation method: 
So the ratio of students in class P to Q comes out to 3 : 2 & the ratio of students in class Q to Ris 2 : 3. Ratio of students in P, Q and R = 3 :2 : 3 So, average of all the classes = `(75xx3 + 80 xx2 + 85xx3)/(3+2+3)` = `(225+160+255)/8` = 80
Combat
(i) They both reached for their combat suits and weapons.
(ii) Young children have to combat the constant desire to eat chocolate.<...
very eager for something, especially a lot of food
In the given question, a word has been given and there are three ways in which the word has been used, in similar or different forms. You need to see ...
In the question below, a sentence is given, four words have been highlighted in bold. Find out if the words are appropriate (grammatically and context...
Select the most appropriate synonym of the given word.
Affliction
Select the antonym of the given word.
LIBERTY
In the following questions, a word has been given and there are three ways in which the word has been used, in similar or different forms. You need to ...
Select the INCORRECTLY spelt word.
Formative
The governor was charged with a serious crime and the party didn’t support him.
Relevant for Exams:
