Question
The average of a set of 's' numbers is 10. If 20 is
added to the set, then the average of the set becomes 10.2. Find the value of '4 X (s - 6)'.Solution
Sum of all 's' numbers = 10s
ATQ:
(10s + 20) / (s + 1) = 10.2
Multiplying both sides by (s + 1):
10s + 20 = 10.2(s + 1)
10s + 20 = 10.2s + 10.2
20 - 10.2 = 10.2s - 10s
9.8 = 0.2s
s = 49
4 X (s - 6):
4 X (49 - 6) = 4 X 43 = 172
If "S $ T @ U & R % V # W & Y © Z", then how is S related to W?
If J # K & L % M @ I % H then how is I related to K?
'A # B' means 'A is the father of B'. 'A @ B' means 'A is the son of B'. 'A & B' means 'A is the wife of B'. 'A % B' means 'A is the sister of B'. If B ...
If, A - B means 'A is the mother of B' A @ B means 'A is the sister of B' A # B means 'A is the husband of B' A & B means 'A is the son of B' A $ B mean...
Answer the questions based on the information given below.
L + M means L is the wife of M.
L ? M means L is the son of M.
L...
P + Q means ‘P is the brother of Q’, P - Q means ‘P is the daughter of Q’, P ÷ Q means ‘P is the husband of Q’, P × Q means ‘P is the so...
A + B means ‘A is the father of B’
A – B means ‘A is the mother of B’
A % B means ‘A is the brother of B’
A # B m...
A#B means A is husband of B.
A@B means A is daughter of B.
A%B means A is father of B.
A&B means A is sister of B.
If O & Q ...
‘R + S’, means ‘R is the sister of S’
‘R - S’, means ‘R is the daughter of S’
‘R × S’, means ‘R is the brother of S...
A # B' means 'A is the father of B'. 'A @ B' means 'A is the husband of B'. 'A & B' means 'A is the daughter-in-law of B'. 'A $ B' means 'A is the of si...
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