Question

if the cost of 6 pens is rupees 72 what is the cost of 10 pens​

Answer 1

Answer:

The cost of $10$ pens is Rs. $120$.  

Step-by-step explanation:

Given : Cost of $6$ pens = Rs. $72$

To find : The cost of $10$ pens.

Solution :

• It is given that the cost of  $6$ pens = Rs. $72$
• We have to find the cost of $10$ pens.
• To find the cost of $10$ pens, we have to first calculate the cost of $1$ pen.
• So, to find cost of $1$ pen, we have to use the given data.

      ∴ The cost of $1$ pen = $\frac{72}{6}$

                                   $= 12$ Rs.

• Now, by multiplying the cost of one pen with the $10$, we can find the cost of $10$ pens.
• ∴ The cost of $10$ pens = Cost of $1$ pen * cost of $10$ pen

                                       $= 12*10$

                                       = Rs. $120$  

• ∴ The cost of $10$ pens is Rs. $120$.  

Answer 2

Here the cost of 6 pens is given to be Rs. 72

We will use this information to find the cost of 1 pen

6 pens = Rs. 72

1 pen = 72 / 6

        = 12

Now, we have to calculate the cost of 10 pens

So, cost of 10 pens = 10 × 12

                                = 120

Hence, the price of 10 pens will be R. 120