The price of a book is 10 rupees more than the price of a pen.The price of a pencil is 5 rupees less than the price of a pen .The total price of 2 books ,3 pens and 3 pencils is 85 rupees . What is the price of each?
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Step-by-step explanation:
Answer :
Pen = 6
Book = 10
Pencil = 4
Solution:
Let
Price of pen = x
Price of book = x + 4
Price of pencil = x - 2
5(x + 4) + 2(x) + 3 (x - 2) = 74
5x + 20 + 2x + 3x - 6 = 74
10x + 14 = 74
10x = 74 - 14
10x = 60
X = 6
Put all the values in above equations
Pen = 6
Book = 10
Pencil = 4
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