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Lele supermarket carries out promotional activities, drinks "buy ten get one free". A bottle of coke is 6 yuan, Xiaohong buy 45 bottles of coke, how much do you have to pay?
45 ／ (10 + 1) = 45 ／ 11 = 4 (bottle) 1 (bottle) (45-4) × 6 = 41 × 6 = 246 (yuan) a: 246 yuan
There are 150 grams of 20% cola drink. How many grams of cola essence are added to make the concentration of cola drink 25%?
The faster, the better. The formula should be concise,
(150*25%-150*20%)/(1-25%)=10
There are 16 bottles of the same mineral water, of which Youyi bottle is of light weight, which belongs to unqualified products. It is necessary to weigh at least several times with a scale without weights to ensure the quality of the water
How to call unqualified products?
16 bottles were weighed in 8 bottles, 8 bottles were more than 8 bottles (lighter) once
Then take the lighter 8 bottles and divide them into 4 bottles, weigh 4 bottles > 4 bottles (lighter) twice
Take the lighter 4 bottles again and divide them into 2 bottles. Weigh 2 bottles more than 2 bottles (lighter) 3 times
Finally, take 2 lighter bottles and weigh 1 bottle > 1 bottle (lighter) for 4 times
Weigh at least 4 times to get the lighter bottle
Someone bought six bottles of drinks, and paid 1.3 yuan for each bottle. When he returned all the drinks, the salesman said that the money for each empty bottle was 1.1 yuan less than the money for the drinks in the bottle, and the person returned () yuan altogether
6 yuan
Mingming bought six bottles of drinks and paid 4.5 yuan for each bottle. When returning the bottles, the salesman said, "the money for each empty bottle is 3.5 yuan less than that for the drinks." how much money did Mingming return? We need to calculate!
6x4.5-6x(4.5-3.5)
Someone bought six bottles of drinks, and paid 1.3 yuan for each bottle. When he returned all the drinks, the salesman said, "the money for each empty bottle is 1.1 yuan less than the money for the drinks in the bottle. This person returned all the drinks______ Yuan
For each empty bottle, (1.3-1.1) △ 2, = 0.2 △ 2, = 0.1 (yuan); 0.1 × 6 = 0.6 (yuan); answer: this person returned a total of 0.6 yuan
For drinks, the price of 1500ml is 5 yuan or that of 300ml is 1.1 yuan. The price of a store is 20% off, that of B store is 40 yuan and that of C store is 20% off, and that of C store is 1 small bottle for free
(1) Which shop is more economical to buy a large bottle of beverage?
It's good to buy a large bottle of drinks at a store. A store only costs 5 x 0.8 = 4 yuan, B store costs 5 yuan, C store also costs 5 yuan, but he actually gets 6.1 yuan. But what you ask is to buy a bottle. Of course, choose a store, it's the cheapest. Right
Mingming's family bought two boxes of drinks, 12 boxes each, which cost 52.8 yuan. How much is each box of drinks?
It's still an equation
2 yuan
A supermarket sold 300 cases of drinks in May. According to this calculation, how many cases of drinks can be sold in the second quarter?
900
The price of a kind of bottled beverage in a supermarket is 36 yuan per case. During May Day, the bottled beverage will be promoted. Two bottles will be given away if you buy one case. Each bottle will be promoted at 10% discount of the original price. How much is the original price of the beverage? How much is the equation adding process
The formula is: 36 / x = (36 / x + 2) * 0.9, x = 2
RELATED INFORMATIONS
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