Question

A publisher offers 22 copies for 20 copies of the same book ordered and a cash discount of 10%. what is the net value of the discount to the buyer ?​

Answer 1

Answer:

11%

Step-by-step explanation:

let the total value of 22 books=x

first 20 books got 10% discount.

then the 20 books got discount=(20x/22)*10%

which is equal to x/11.

again from the first the 2 books sold at x/11.

then the total value of books after discount is

x/11+(20x/22-x/11)=20x/22

again the original amount=x

but the value we got=20x/22

so discount=x-20x/22

% of discount= 11%.

Answer 2

Given :- A publisher supplies 22 copies for every 20 copies ordered and also a cash discount of 10%. what is the net value of discount ?

Solution :-

it has been given that, the publisher supplies 22 copies for every 20 copies .

so,

→ Extra copies given = 22 - 20 = 2 copies.

and,

→ Total copies the buyer received = 22

then,

→ Discount given = (Extra copies * 100) / (Total copies received)

→ Discount the buyer received in first case = (2 * 100) / 22 = (100/11) % .

Now, we have given that, cash discount of 10% is also given to the buyer .

and, we have to find the successive discount . we know that,

• D = - A - B + (AB/100) { where A and B are individual discount.)

and, now we have values of both A and B which are :-

• A = (100/11)
• B = 10

Putting both values we get,

→ D = (-100/11) + (-10) + [{(-100/11) * (-10)}/100]

→ D = (-100 - 110)/11 + (1000/1100)

→ D = (-210/11) + (10/11)

→ D = (-210 + 10)/

→ D = (-200) / 11

→ D ≈ 18.18 %

here, Negative sign refers to discount .

Hence, we can conclude that, net value of discount was 18.18 % .

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