Question

Pencils sold with cost price rate per pencil with 10% profit and pens with cost price rupees 12 per pen at 5% profit if profit = 450 on selling a total of 650 pencils how many pencils sold

Answer 1

Answer:

770

Step-by-step explanation:

pencil=10%

pen=5%

cost of pen=12

profit=450

number of pencils sold=650

Answer 2

Answer:

The number of pencils sold are 300.

Step-by-step explanation:

Given : Pencils sold with cost price Rs.8 per pencil with 10% profit and pens with cost price rupees 12 per pen at 5% profit if profit = 450 on selling a total of 650 pencils.

To find : How many pencils sold ?

Solution :

Let the number of pencils having cost price Rs 8/pencil = x

Pens having cost price of Rs 12/pen = 650-x

According to question,

$10\% \text{ of } 8x + 5\% \text{ of }12(650-x) = 450$

$\frac{10}{100}\times 8x +\frac{5}{100}\times 12(650-x) = 450$

$0.8x +0.6(650-x) = 450$

$0.8x +390-0.6x = 450$

$0.2x= 450-390$

$0.2x=60$

$x=\frac{60}{0.2}$

$x=300$

The number of pencil are 300.

The number of pens are 650-300=350.

Therefore, The number of pencils sold are 300.