Question
The total number of students in class A and B is 72. The
number of students in A is 40% more than that in B. The average marks of students in B are 50% more than that of students in A. If the average marks of all the students in A and Bare 58, then what are the average marks of students in A?Solution
Let the number of students in class B is x then the number of students in class A will be = 1.4x Let the average marks of students in class A is y then the average marks of students in class B will be = 1.5y Now given, average of both the class is 58. Thus, (1.4x × y + x ×1.5y)/(x+1.4x) =58 1.4y +1.5y =58×2.4 y = (58×2.4)/2.9 =48.
_____ is the father of _____.
I. V, U
II. P, Q
III. U, T
Answer the questions based on the information given below.
There are six members (F, G, H, I, J and K) in a family, which consist of three ge...
If G is the son of H, H and I are sisters, K, is the mother of I, J is the son of K, then which of the following statements is correct?
How is E related to F?
Answer the questions based on the information given below.
Nine members F, G, H, I, J, K, L, M and N are members of a family consisting of thre...
If U, who does not have a sibling, is the spouse of H, H is the sister of W, W is the mother of K, J is the only sibling of K’s spouse, then H’s bro...
I is ____ of K.Â
Answer the questions based on the information given below.
There are eight persons S, T, M, N, O, P, Q, and R in a family of three generations....
How is F related to M?
A and B are brothers. C and D are sisters. A’s daughter is C’s sister. What is B’s relation to D?
