Question
The average weight of 36 students in a class is 62 kg.
When two new students having weights (m + 8) kg and (m − 6) kg joined, the average weight dropped by 1 kg. What is the value of (m − 30)?Solution
ATQ,
38 × 61 − 36 × 62 = m + 8 + m − 6 Or, 2m + 2 = 2318 − 2232 Or, 2m = 84 Or, 'm' = 42 Therefore, required value = 42 − 30 = 12
In a certain code language,
X + Y means 'X is the father of Y'
X - Y means 'X is the brother of Y',
X X Y means 'X is the sister of...
A # B’ means ‘A is the brother of B’.
‘A @ B’ means ‘A is the daughter of B’.
‘A & B’ means ‘A is the husband of B’....
'A $ B' means 'A is the mother of B'. 'A % B' means 'A is the wife of B'. 'A @ B' means 'A is the sister of B'. 'A # B' means 'A is the son of B'. If I ...
How is P related to O?
If (A @ B) means A is son of B, (A # B) means A is father of B, (A & B) means A is mother of B, (A $ B) means A is brother of B. If G @ H&I # J $ K@ L, ...
If ' Y $ I @ W, I # T % S, I % P' , then how is Y related to S?
If ‘J % K & L @ H # I % G’ is true, then how is G related to K?
In the given relationship, ____ is related to ____ in the same way as M is related to E.
If "G @ P & I % W & V # Q & K * M" is definitely true, then how is W related to K?
‘M $ K’ means ‘M is the mother of K’.
‘M # K’ means ‘M is the father of K’.
‘M @ K’ means ‘M is the husband of K’....
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