Make tin cans out of tin. Each can can be made of 25 boxes or 40 boxes, and one box can be made of two boxes. At present, there are 36 pieces of iron. How many pieces can be used to make the box body and the box bottom just match?

There are two kinds of trucks, two big cars and three small cars can transport 15.5 tons at a time, and five big cars and six small cars can transport 35 tons at a time. How many tons can three big cars and five small cars carry at a time?

The road from a to b has an uphill section and a flat section. If the uphill section is 3km, the flat slope section is 4km, and the downhill section is 5km, then it takes 54 minutes to get from A to B and 42 minutes from B to A. What is the whole journey from A to B?

Two antiseptics containing 30% and 75% should be used to prepare 50% antiseptics 18 kg. How many kilograms should I take each of the two potions? Simple solution

Before the discount, I spent 1080 yuan to buy 60 A products and 30 B products, and bought 50 A products and 10 B products with 840 yuan. After the discount, I spent 9600 yuan to buy 500 A goods and 500 B goods. How much less than no discount?

According to the accounting records of a store, the income from selling 39 toothbrushes and 2 1 box of toothpaste a day is 396 yuan; A few days ago, I also sold 52 toothbrushes and 28 boxes of toothpaste at the same price, earning 5 18 yuan. Is there anything wrong with this record? If yes or no, please explain the reasons.

I have used it for a long time, I hope it will help you, and I also hope to adopt O(∩_∩)O~~