Question

Cost of a pencil is six and half times the cost of an
eraser. Express this statement as a linear equation
in two variables.
(a) 2x - 13y = 0
(b) 3x - 13y = 0
(c) 2x + 13y = 0
(d) 3x + 13y = 0​

Answer 1

Answer:

2x - 13y = 0

Step-by-step explanation:

Let us assume cost of Eraser be ₹ y

Then and cost of pencil be x = 6.5y.

Multiplying both sides by 2

$2 \times x = 2 \times 6.5y \\ \implies 2x = 13y \\ \implies \: 2x - 13y = 0$

Answer 2

B) 2X-13Y=0

let the cost of pencil be Y=6.5

then the cost of eraser be X

then now multiply 2 by the both sides

x*2-6.5*y=0

2X-13Y=0