Question

The price of a book is Rs10 more than twice the price of a pen .The total price of 5 books and 4 pens is Rs 470.Find the price of a book and a pen

Answer 1

Answer:

Let the price of pen= x

Price of book= 2x+10

Price of 4 pens= 4x

Price of 5 books

= 5(2x+10)

= 10x+50

⇒ 4x+ 10x+50= 470

14x+50= 470

14x= 470-50

14x= 420

X= 420/14

X= 30

Price of pen= Rs 30

Price of book:

2×30+10

60+10

Rs 70

VERIFY:

4x+10x+50= 470

(4×30)+(10×30)+50= 470

120+300+50= 470

470= 470

LHS= RHS

Hence, verified

Hope it helps.

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