Предмет: Математика, автор: timka6613

Купили 12 кг мармелада и 9 кг зефира по одинаковой цене. За мармелад заплатили на 2 400 тенге больше, чем за зефир. Сколько заплатили за мармелад и зефир по отдельности

Ответы

Автор ответа: gensinrajden70

6

Ответ:

Пусть число 1кг будет х

Следовательно мармелада 12х, а зефира 9х

За мармелад заплатили на 2400тг болше чем за зефир.

Далее следует такое уравнение

12х=9х+2400

12х-9х=2400

3х=2400

х=2400÷3

х=800

800 за 1кг, значит

зефир= 9×800=7200тг

мармелад =12×800= 9600тг

проверяем

9600-7200=2400тг

luba14167: спасибо большое ❤️

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Английский язык, автор: aelitamv

Task 1. Read the text, put the appropriate LINKING WORDS in the sentences.

*All in all, *On the other hand, *Firstly, * To begin with, * Secondly,
* First of all.

These days, more and more people are hiring personal fitness
trainers. It seems like a great way to keep healthy, but what are the
advantages and disadvantages of this chois? there are a number of disadvantages to personal trainers can hiring a personal fitness trainer.
create fitness programs that suit their customers' individual needs. For example, they can exercise at their own pace, and do activities that interest them. personal trainers give their customers one-to-one attention. In this way they are more motivated to reach their
fitness goals."there are also certain disadvantages. hiring a personal trainer can be expensive. This
means that many people cannot afford it. In addition, some personal
trainers do not have professional qualifications. Consequently, they may not be able to give useful and safe advice. there are both pros and cons to hiring a personal
trainer. Although you get more one-to-one attention, I believe that the expense isn't worth it for most people.

Task 2. Choose the correct item.
1. When my dad sees blood, he falls/passes out.
2. Will took/put on a lot of weight.
3. My parents have taken/got up aerobics.
4. Sue hurt/spoiled her head when she bumped into a lamp post.
5. Can you go to the chemist's to pick/collect up my prescription?

1 год назад

Предмет: Химия, автор: nastaneceporenko

помогите плиз даю 20 балов

1 год назад

Предмет: Химия, автор: tycfuk89

ДОПОМОЖІТЬ СКЛАСТИ РІВНЯННЯ ХІМІЧНИХ РЕАКЦІЙ!!!! ДАЮ 80 БАЛІВ!!!!

1 год назад

Предмет: Английский язык, автор: Olegpe

1. Use the verbs in brackets in the correct tense form:
1. The storm _______________ (destroy) the house our neighbours live in.
2. The students _______________ (not prepare) the project so far.
3. The meeting ____________(start). They _____________(introduce) the first speaker.
4. _______ever ___________(to stay) in the hotel “Nadiya” . – No, I ___________.
5. My father ______________(to get) a new prospecting position in a building company.

7 лет назад

Предмет: Литература, автор: zopamalik

Представитель сказочной флоры, растёт в саду высоко, добывается не легко, употребляется в свежем виде как лекарство от прожитых лет

7 лет назад