Question

18.Selling price for the seller = marked price - discount​

Answer 1

Answer:

Step-by-step explanation:

Let cost one pen, one pencil, one eraser be x,y,z rupees respectively. Therefore 4x+2y+8z = 12 8x+10y+4z = 36 Adding above equations 12x+12y+12z = 48 Divide above equation by 4 then 3x+3y+3z = 12 Cost of 3 pens ,3 pencils,3 erasers is ... and 6 erasers, if the price of 3 pens, 5 pencils, and 7 erasers is 80; and 5 pens, ...