the price of a book is 4 rupees more than the price of a pen. The price of a pencil is 2 rupees less than the price of the pen the total price of 5 books, 2pen and 3pencil is 74 rupees.What is the price of each?
Answers
Answered by
3
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
Answered by
1
Answer:
let pens be=2x
let books = 4+2x*5
let pencil=2-2x*3
cost of all items=74rupees
price of each = 2x+4+2x*5+2-2x*3=74
=2x+20+10x+6-6x=74
,
2x+10x-6x+20+6=74
12x-6x+26=74
6x+26=74
6x=74-26=48
x=48/6=8
The cost of each item is 8 rupees
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