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.
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