Question

Due to Covid -19 a shopkeeper was not able to clear his
stock. So now he has decided to sell pen at a profit of Rs
2(per pen), pencil at a loss of 50 paise (per pencil) and
eraser at a loss of 15 paise (per eraser). On a particular
day, he earns a profit of Rs 10. If he sold 10 pens and the
number of pencils and erasers, he sold are in the ratio 7:
10, then find the number of pencils and erasers he sold
on that day. Also find loss incurred on pencils and erasers.
plssssss tell the answer
it's urgent
pls tell fast
plss ​

Answer 1

Given:

Profit gain by selling pen = Rs. 2/-

Loss by selling pencils = 50 paise

Loss by selling eraser = 15 paise

He gained Rs. 10/- when he sold 10 pens and numbers of pencil and erasers in ratio of 7:10

To Find:

Number of pencils and eraser he sold

Loss incurred on pencils and erasers.

Solution:

Profit gained when he sold 10 pens

= Rs. 2×10 = Rs. 20/-

Loss incurred on pencils and erasers

= Rs. 20 -10 = Rs. 10 (1000 paise)

ATQ

Ratio of pencil and eraser = 7:10

Let number of pencils = 7x

And number of eraser = 10x

=> 7x × 50 + 10x × 15 = 1000

=> 350x + 150x = 1000

=> 500x = 1000

=> x = 2

Number of pencils = 7×2 = 14

Number of erasers = 10×2 = 20

Hence, it is the required answer.

Answer 2

Step-by-step explanation:

Given : -

• pen at a profit of Rs2(per pen),

• pencil at a loss of 50 paise (per pencil)

• eraser at a loss of 15 paise (per eraser).
• On a particular day, he earns a profit of Rs 10.

• If he sold 10 pens and the number of pencils and erasers.

• he sold are in the ratio 7: 10

To Find : -

• find the number of pencils and erasers he sold on that day.

• find loss incurred on pencils and erasers.

Solution : -

By selling a pen gain is Rs.2

he total loses 65 paise

On one day, he gain = Rs.10

On ten pens, his gain = 10 × 2

= Rs.20

loss on pencils and erasers = Rs.20 - Rs.10

= 10 Rs.

= 1000 paise

Ratio in pencil and eraser =7:10

Let number of pencils = 7x,

then eraser = 10x

7x × 50 + 10x × 15 = 1000

350x + 150x = 1000

500x =1000

x = 1000/500

x = 2

Number of penciles = 7 × 2

= 14

Number of erasers = 10 × 2

= 20