Question

the cost of 1 dozen pen is ₹180 and the cost of 8 ballpens is ₹72.fiind the ratio of the cost of 1 pen to that of 1 ballpens​

Answer 1

Answer:

15:9

Step-by-step explanation:

we need to divide 180 by 12 ( because 1 dozen is equal to 12 )

and divide by 72 by 9

so ans is 15:9

Answer 2

Answer :-

• The ratio is 5 : 3.

Given :-

• The cost of 1 dozen pens is Rs 180.
• The cost of 8 ball pens is Rs 72.

To find :-

• The ratio of the cost of 1 pen to that of 1 ball pen.

Step-by-step explanation :-

• Before finding the ratio, let's find the cost of 1 pen and 1 ball pen.

To find the cost of 1 pen :-

• Cost of 1 dozen pens = Rs 180.
• We know that 1 dozen = 12.
• So the cost of 12 pens is Rs 180.

• Hence, the cost of 1 pen = 180 ÷ 12 = Rs 15.

To find the cost of 1 ball pen :-

• The cost of 8 ball pens = Rs 72.

• So, the cost of 1 ball pen = 72 ÷ 8 = Rs 9.

Now let's find the ratio!

• Cost of 1 pen = Rs 15.
• Cost of 1 ball pen = Rs 9.

Hence,

Ratio of the cost of 1 pen to that of 1 ball pen is :-

$\sf 15 : 9$

Reducing the ratio to it's simplest form,

$\overline{\boxed{\sf 5 : 3}}$