Question
The mean weight of 'w' students in a classroom is 42 kg.
When the class teacher, weighing 61.5 kg, is added to the group, the average weight increases by 0.5 kg. Determine the number of students in the class.Solution
ATQ, Total weight of students = 42w kg Total weight of students including class teacher = 42.5 × (w + 1) kg 42w + 61.5 = 42.5 × (w + 1) 42w + 61.5 = 42.5x + 42.5 0.5w = 19 w = 38 Required number of students = 38
Select the figure from the given options that will come next in the following figure series.
Select the figure from among the given options that can replace the question mark (?) in the following series.
Find the option which is related to the third figure in the same way as the second figure is related to the first figure. (The first figure is the leftm...
Each of the following questions consists of two sets of figures. Figures A, B, C and D constitute the Problem Set while figures (1), (2), (3) and (4) c...
In each of the following questions which one of the answer figures shall complete the given question figure.
Find the question mark ? figure from answer figure.
Which of the given figures when placed in the 5th position would continue the series that is established by the first four figures?
Each of the following questions consists of two sets of figures. Figures A, B, C and D constitute the Problem Set while figures (1), (2), (3) and (4) c...
Select the figure which will come next in the following figure series.
Select the figure from the options that can replace the question mark (?) in the following series.
Relevant for Exams:
