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Step-by-step explanation:
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Step-by-step explanation:
Let price of 1 pencil be x
so price of 1 pen is (x + 9)
and price of book is (x+9+8) = (x+17)
A/Q :-
12 x + 12 ( x+ 9) = 9 ( x +17)
24x + 108 = 9x + 153
15x = 45
x = 3
Therefore:-
price of pencil = ₹ 3
price of pen = ₹ 12
price of book = ₹ 20
Hope it was helpful
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