Question

школьники 3 дня собирали по 1245 кг металлолома . Две пятые части всего металлолома увез грузовик Сколько килограммов металлолома осталось

Answer 1

1) 1245*3=3735(кг) - металлолома собрали всего
2) 3735:5=747(кг) - одна пятая часть металлолома
3) 747*2=1494(кг) - две пятые части металлолома
4) 3735-1494=2241(кг) - металлолома осталось после увоза
Ответ: 2241 кг металлолома.

Answer 2

#### Calculation of Remaining Metal Scrap To calculate the amount of metal scrap that is left after two-fifths of the total amount has been taken away, we need to follow these steps: 1. Calculate the total amount of metal scrap collected by the students: 1245 kg. 2. Calculate the amount of metal scrap taken away by the truck: two-fifths of 1245 kg. Let's perform the calculations: 1. Total amount of metal scrap collected: **1245 kg**. 2. Amount taken away by the truck: **(2/5) * 1245 kg**. To find the remaining amount of metal scrap, we need to subtract the amount taken away by the truck from the total amount collected: Remaining metal scrap = Total amount collected - Amount taken away by the truck. Let's calculate the remaining amount of metal scrap: Remaining metal scrap = 1245 kg - (2/5) * 1245 kg. Calculating the expression: Remaining metal scrap = 1245 kg - (2/5) * 1245 kg = 1245 kg - 498 kg = **747 kg**. Therefore, after the truck took away two-fifths of the total metal scrap collected by the students, there are **747 kg** of metal scrap remaining.