Question

Математика 3 клас2 апельсина і 5 мандаринів коштують стільки ж,скільки 3 апельсина і 3 мандарина.Що дорожче- 4 апельсина чи 8 мандаринів?

Answer 1

2 апельсина + 5 мандарин = 3 апельсина + 3 мандарина
или уравнением:2х+5у=3х+3у
5 мандарин - 3 мандарина = 3 апельсина -2 апельсина
уравнение: 5у-3у=3х-2х
2 мандарина = 1 апельсину
уравнение: 2у=х
Значит 8 мандарин и 4 апельсина стоят одинаково
Ответ: 8 мандарин и 4 апельсина стоят одинаково

Answer 2

Comparison of Cost between Oranges and Tangerines

To compare the cost of 4 oranges and 8 tangerines, we can start by determining the cost of 3 oranges and 3 tangerines, as they are said to be equal in price to 2 oranges and 5 tangerines.

Given: - 2 oranges + 5 tangerines = 3 oranges + 3 tangerines

Let's find the cost of 2 oranges and 5 tangerines first.

The cost of 2 oranges + 5 tangerines is equal to the cost of 3 oranges + 3 tangerines.

Cost of 2 Oranges and 5 Tangerines

The cost of 2 oranges + 5 tangerines is equal to the cost of 3 oranges + 3 tangerines.

Let's assume the cost of 1 orange is O and the cost of 1 tangerine is T.

So, 2O + 5T = 3O + 3T

Now, we can solve for the cost of 1 orange and 1 tangerine.

Cost of 1 Orange and 1 Tangerine

By rearranging the equation, we get: 2O - 3O = 3T - 5T - O = -2T O = 2T

This means the cost of 1 orange is equal to the cost of 2 tangerines.

Now that we know the relationship between the cost of oranges and tangerines, we can compare the cost of 4 oranges and 8 tangerines.

Comparison of Cost

- 4 oranges would cost 4 times the cost of 1 orange, which is 4O. - 8 tangerines would cost 4 times the cost of 2 tangerines, which is 4T.

Since we know that the cost of 1 orange is equal to the cost of 2 tangerines, we can compare the cost directly.

So, 4 oranges would be equal in cost to 8 tangerines.

Therefore, the cost of 4 oranges is the same as the cost of 8 tangerines.