Question

The cost of 11 pens is Rs. 11/3. What will be the cost of 1 pen? ​

Answer 1

Given,

The cost of 11 pens is Rs. 11/3

To find,

The cost of 1 pen.

Solution,

We can solve this mathematical problem by using the normal arithmetic method. We need to apply the following mathematical formula for calculating the price of one pen.

Price of one pen :

= Price of 11 pens/11

= 11/3 ÷ 11

= 11/3 × 1/11

= Rs. ⅓

(The price of one pen is also in the fractional form, and we can also rewrite this value in decimal form.)

Hence, cost of one pen is Rs. ⅓

Answer 2

Given:

Cost of 11 pens us Rs 11/3

To Find:

Cost of 1 pen

Solution:

To find the cost of 1 pen, just divide 11/3 by 11.

If 11 pens = cost is 11/3

Then 1 pen =?

=> 11/3 ÷ 11/1

When we reciprocal 11/1 to 1/11, the division(÷) symbol becomes a multiplication (x) symbol.

=> 11/3 x 1/11

=> (11x1)/(3x11)

=> 11/33

Reduce the fraction.

=> 11 x 1 = 11

=> 11 x 3 = 33

=> 11/33

=> 1/3

Cost of 1 pen is 1/3.

Verify:

1 pen = 1/3

11 pens = 11 x 1/3

11 pens = 11/3.

Hence, the cost of 1 pen is Rs 1/3.