Question

The total cost of 5 pens and 3 pencils is Rs. 365.If the cost of 11 pens is same the cost of 8 pencils find the cost of a pen and a pencil separately.

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Answer 1

Answer:

cost of Pen=40

cost of Pencil= 55

Step-by-step explanation:

let cost of 1 Pen=x

let cost of 1 Pencil= y

by question cost of -

5x + 3y =365

and also cost of -

11x = 8y

x =8/11 y

put the value of x then

5×8/11 y + 3y = 365

(40y+33y)/11 = 365

73y = 365 × 11

y = 4015/73

y= 55

then value of x-

x =( 8/11) × 55

x =8×5

x= 40