Question

Total of a pencil and a eraser RS. 1.10.Pencil is Re 1 more than eraser. find the rate ​

Answer 1

Answer:

Pencil = 1 + Eraser

Let Eraser = x

Pencil + Eraser = 1.10

(1 + x ) + x = 1.10

2x + 1 = 1.10

2x = 1.10 - 1

x = 0.10/2

x = 0.05

So Cost of Eraser = 0.05

So Cost of Pencil = 1.05. i.e (1 + 0.05)

Answer 2

The cost of a pencil = ₹ 1.05 and the cost of an eraser = ₹ 0.05

Step-by-step explanation:

Let the cost of a pencil = ₹ x

∴ The cost of an eraser = ₹ (x - 1)

To find, the cost of  a pencil and the cost of  an eraser = ?

According to question,

Total cost of a pencil and a eraser  = ₹ 1.10

∴ x + x - 1) = 1.10

⇒ x + x - 1 = 1.10

⇒ 2x - 1 = 1.10

⇒ 2x = 1.10 + 1 = 2.10

⇒ x = $\dfrac{2.10}{2}$ = 1.05

∴ x - 1 = 1.05 - 1 = 0.05

Thus, the cost of a pencil = ₹ 1.05 and the cost of an eraser = ₹ 0.05