Question

The price of 2 notebooks and 3 textbook is rupees 120, but a notebook costs rupees 10 more than the testbook. Find the cost of both ;the notebook and the test book

Answer 1

let the price of 3 textbooks be 3x.
then,the price of 2 notebooks is 2(x+10).
therefore,3x+2x+20=120
=>5x=100
=>x=20
the price of 3 textbooks is rs 60.
the price of 2 notebooks is rs 2(20+10)=rs 60.

hope this answer is helpful

Answer 2

Let The price of  notebooks be x

and  The price of textbook be y

then,The price of 2 notebooks and 3 textbook is rupees 120

             = 2x+3y=120     -1equ

acc. to ques,    a notebook costs rupees 10 more than the testbook.

therefore,     x=10+y  put in 1equ

so, 2(10+y)+3y = 120

     20+2y+3y = 120

                 5y = 120-20

                  5y = 100

                   y = 20

since, x= 10+y

x =10+20

x =30

hence, cost of  notebook is Rs 30 and cost of textbook is Rs 20