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Instructions
These questions are based on the following information:
‘A @B’ means A is added to B
‘A★B’ MEANs A is multiplied by B
‘A#B’ means A is divide by B
‘A$B’ means B Is subtracted from A
Question 191
Total age of 12 boys is X and the total age of the 13 girls is Y. What is the average age (A) of all the boys and girls together?
Solution
A = total age/total students
=> A = (X + Y) $$\div$$ (12 + 13)
=> A = (X + Y) $$\div$$ 25
$$\therefore$$ A = (X @ Y) # 25
=> Ans - (A)
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