Question

Из тестовых ЕГЭ по математике (профильный уровень!). Можно с объяснением? 25 баллов! В туристический поход отправляется группа из 18 человек. В походе на одного человека приходится 60 граммов гречки на прием пищи. Планируется 7 раз готовить гречку. Сколько килограммовых пачек необходимо купить, чтобы гречки хватило?

Answer 1

18 человек за 1 приём съедят 18*60=1080 граммов=1,08 кг
За 7 раз 18 человек съедят 1,08*7 = 7,56 кг
Соответственно чтобы хватило нужно 8 килограммовых пачек гречки

Answer 2

Calculating the Amount of Buckwheat Needed for a Hiking Trip

To calculate the amount of kilogram-sized packs of buckwheat needed for the hiking trip, we can follow these steps:

1. Calculate the Total Amount of Buckwheat Needed: - The group consists of 18 people, and each person requires 60 grams of buckwheat per meal. - The group plans to cook buckwheat 7 times during the trip.

2. Convert the Total Amount to Kilograms: - Once we have the total amount of buckwheat needed, we can convert it to kilograms to determine the number of kilogram-sized packs required.

3. Determine the Number of Kilogram-Sized Packs: - Finally, we can calculate the number of kilogram-sized packs needed to ensure there is enough buckwheat for the entire trip.

Let's proceed with the calculations.

Calculation

1. Total Amount of Buckwheat Needed: - Total amount = 18 people * 60 grams/person/meal * 7 meals - Total amount = 7560 grams

2. Convert the Total Amount to Kilograms: - Total amount in kilograms = 7560 grams / 1000 (to convert grams to kilograms) - Total amount in kilograms = 7.56 kilograms

3. Determine the Number of Kilogram-Sized Packs: - Number of kilogram-sized packs needed = Total amount in kilograms / 1 kilogram/pack - Number of kilogram-sized packs needed = 7.56 packs

Answer

To ensure there is enough buckwheat for the entire hiking trip, 8 kilogram-sized packs of buckwheat need to be purchased.

This calculation ensures that each person has enough buckwheat for the planned meals during the hiking trip.