Question

5 pencils and 7 pens together cost Rs.50 whereas 7 pencils and 5 pens together cost Rs.46. The cost of one pen is

1 point

Rs.5

Rs.6

Rs.3

Rs.4

​

Answer 1

Answer:

Rs.6

Step-by-step explanation:

let price of pencil and pen be x and y respectively

5x+7y=50

7x+5y=46

that gives

y=6

Answer 2

Answer:

let the cost of one pen and one pencil be x and y rupee

so

7x+5y=50

and

5x+7y=46

then solve this equation we get

24x=120 so

x=5 rupees

so price of one pen is 5