Question

The cost of $5$ packets of pens with each packet having $10$ pens is$₹500$ .Then the cost of $8$ packets of $12$ pens each is :

• A. $₹960$
• B. $₹1060$
• C. $₹720$
• D. $₹1280$

Answer 1

The correct option is A

$₹960$

Step $1$: Find the cost of $1$ pen:

Given, the cost of $5$ packets of pens with each packet having $10$ pens is$₹500$,

The number of pens in $5$ packets $=5\times 10=50$[$\because$ Numbers of pens in $1$ packet is $10$ ]

$\therefore$The cost of $50$ pens $=₹500$

$\Rightarrow$The cost of $1$ pen$=\frac{₹500}{50}=₹10$

Step $2$: Find the cost of $8$ packets:

Given, the number of pens in $1$ packet is $12$,

$\therefore$The number of pen in $8$ packets$=12\times 8=96$

$\because$The cost of $1$ pen$=₹10$

$\Rightarrow$The cost of $96$ pens$=₹96\times 10=₹960$

Thus, the cost of $8$ packets of $12$ pens each is $₹960$.

Hence, option $\left(\mathrm{A}\right)$ is correct.