Question

Cost of a book is 3 more than 4 times the cost of a pen. Cost of a pen and book together is 43. What is the cost of a pen and that of a book?

Answer 1

Explanation:

Let the cost of the pen be x.

So the cost of the book is 4x+3.

ATQ,

x+4x+3=43

5x+3=43

5x=40

x=8

Cost of pen=₹8

"" "" book=4 x 8 +3

=₹35

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