Question

two books and one open pen cost 35$ and 3 books and four pens cost 65$. Find the cost of book and pen seperately

Answer 1

Answer:

2x + y =35

3x+2y =65

by × with 3 and

6x +3y = 105

6x + 4y =130

after subtracting

v get

y = 25 = cost of pen

x = 5 = cost of book

Answer 2

Let the cost of one book be X and let the cost of 1 pen be y.