The price of a book is 15 yuan per book, and 50% of the profit can be gained after sale. If the book is sold at a 20% discount of the price, how much will the profit be? Is it 4.5 yuan or 2 yuan?

Cost = 15 × (1 + 50%) = 10 yuan
Profit = 15 × 0.8-10 = 2 yuan

The price of a book is 15 yuan per book, and 50% profit can be gained after sale. If the book is sold at 20% discount of the price, how much yuan can be gained

The price of a book is 15 yuan per book, and 50% profit can be gained after sale. If the book is sold at 20% discount of the price, how much yuan can be gained
The price of each book is 15 yuan, and 50% profit can be gained after selling
Then, book cost + book cost * 50% = 15
Book cost = 15 / 150% = 10 yuan
If sold at 20% off the price
20% discount of the price = 15 * 0.8 = 12 yuan
Then the profit = 12-10 = 2 yuan
Therefore, according to the 20% discount of the price, you can make a profit of 2 yuan

A bookstore is in the process of promoting sales. It introduces a special card with a price of 20 yuan per card. With this card, you can enjoy a 20% discount. Li Ming bought a card first and then paid with the card. As a result, he saved 12 yuan. What is the total price of the book?

Should be bought 160 yuan book bar, I am wood water bookstore, if wrong, my retirement

In the promotion activities of a bookstore, a book purchasing discount card is introduced, each price is 20 yuan, and the book with the card can enjoy a 20% discount. Zhang Ming went to the bookstore to buy books, first bought a discount card, and then paid with the card, which saved 15 yuan. What's the total value (original price) of Zhang Ming's books this time? The answer is 175

The total price of the book is x yuan. According to the idea of the book price, x = the actual money spent + 12, that is: x = x * 80% + 20 (buy card) + 120.2x = 12 + 20x = 160 (yuan) actual cost: 160-12 = 148 yuan

A bookstore in the promotion activities, the introduction of a discount card, each card price of 20 yuan, with the card to buy books can enjoy a 20% discount When Xiaobin went to the bookstore to buy books, he bought a discount card. He felt it was worthwhile to pay with the card. He asked him how much yuan was the total value of the books he bought each time?

The total value is x yuan, which is 0.8x after 20% discount and less than X after 20% membership card
So 0.8x + 20100 yuan
So the total value is at least 100 yuan

In the promotion activities of a bookstore, a discount card is introduced, each card is priced at 20 yuan. You can enjoy a 20% discount when you buy books with the card. Xiao Ming goes to the bookstore to buy books, (?) Add: saved 12 yuan, if Xiaoming does not pay by card, how much should he pay?

The original price of the book is x yuan
X－(0.8X+20)=12
X = 160
So without the card, he should pay 160 yuan

In a bookstore, a special card was introduced. The price of each card is 20 yuan, and you can enjoy 20% discount when you buy books with the card. Xiao Wang bought the discount card first and then paid with the card. As a result, he saved 12 yuan. Please help Xiao Wang calculate the total cost and the ad valorem price of the book. (solution to the equation)

Answer 1: suppose the total price of the book is x yuan. According to the meaning of the title and the composition of the book price, then: x = the money actually spent by Xiao Wang + 12
That is: x = x * 80% + 20 (buy card) + 12
0.2X=12+20
X = 160 yuan
Actual cost: 160-12 = 148 yuan
Let Xiao Wang spend m yuan in total. According to the meaning of the title, the book price = m + 12
According to the composition of actual spending, then:
M = 20 (buy card) + book price * 80%
So: 20 (buy card) + (M + 12) * 80% = m
0.2M=29.6
M = 148 yuan
Book price = 148 + 12 = 160 yuan
A: Xiao Wang spent 148 yuan, and the total price of the book is 160 yuan
Test: Xiaowang's money + 12 = 20 (buy card) + 160 * 80% + 12 = 160

When Xiao Ming goes to the bookstore to help his classmates buy books, the salesman tells him that he will enjoy a 20% discount if he applies for a membership card with a price of 20 yuan, How much money can be saved

If you don't apply for a membership card, the price is 200 yuan,
Using membership card will be equal to 200x0.8 + 20 = 180 yuan, using membership card can save 20 yuan

A commodity will lose 25 yuan at a discount of 7.5% of the price, and will earn 20 yuan if it is sold at a 10% discount of the price. How much is the price

Using the equation:
Let the price be x yuan
0.9x-20＝0.75x+25
X = 300 yuan
Therefore, the price is 300 yuan
The cost is 250 yuan

If a product is discounted, a 7.5% discount on the price will be compensated by 25 yuan, while if it is sold at a 10% discount, it will earn 20 yuan. How much is the price of this commodity

Suppose the price of the goods is x yuan
0.75x+25=0.9x-20
0.15x=45
X = 300 yuan
A: the price is 300 yuan

The price of a book is 15 yuan per book, and 50% of the profit can be gained after sale. If the book is sold at a 20% discount of the price, how much will the profit be? Is it 4.5 yuan or 2 yuan?