Question

Vamsi purchased 3 pens and 5books for 180ruppes and Suresh purchased 2pens and 8 books for 260 ruppes​

Answer 1

Answer:

book-30rupees,pen-10 rupees

Answer 2

Answer:

Step-by-step explanation:

Let the number of books be. X

Let the number of pens be. Y

A.T.Q

3X+5Y=180....…..........1

2X+8Y=260………........2

BY SOLVING..........1

3X+5Y=180

3X=180-5Y

X=180-5Y/3……......3

PUT THE VALUE OF X IN ...........2

2X+8Y=260

2(180-5Y/3)+8Y =260

760-10Y+8Y=260(3)

760-2Y=780

-2Y=780-760

-2Y= 20

Y= 20/-2

Y=10

PUT THE VALUE OF Y IN ........3

X=180-5Y/3

X=180-5(10/3)

X=180-50/3

X=540-50/3

X=490/3

X=163.33