Question

Девочка с первого куста малины собрала на 1,8 кг больше,чем со второго куста, а со второго в 1,4 раза меньше, чем с первого. На сбор 1 кг малины нужно 0,3 ч. Сколько времени она собирала малину с каждого куста?

Answer 1

Составляем условие: 1 куст - х, 2 куст - (х-1,8) 1куст -х, 2 куст - (х/1,4) т. е х-1,8=х/1,4 решаем получается х=6,3 кг. это с первого куста, со второго соответственно 6,3-1,8= 4,5 кг далее 4,5+6,3=10,8 кг она всего собрала . теперь 10,8*0,3=3,24 ч ответ : 3,24 часа

Answer 2

Problem Analysis

We are given the following information: - A girl collected 1.8 kg more raspberries from the first bush than from the second bush. - The amount of raspberries collected from the second bush is 1.4 times less than the amount collected from the first bush. - It takes 0.3 hours to collect 1 kg of raspberries.

We need to determine how much time the girl spent collecting raspberries from each bush.

Solution

Let's assume that the amount of raspberries collected from the second bush is x kg.

According to the given information: - The amount of raspberries collected from the first bush is x + 1.8 kg. - The amount of raspberries collected from the second bush is 1.4 times less than the amount collected from the first bush, so x = (x + 1.8) / 1.4.

To solve this equation, we can simplify it by multiplying both sides by 1.4: 1.4x = x + 1.8.

Now, we can solve for x: 1.4x - x = 1.8, 0.4x = 1.8, x = 1.8 / 0.4.

Using this value of x, we can calculate the amount of time spent collecting raspberries from each bush: - From the first bush: (x + 1.8) * 0.3 hours. - From the second bush: x * 0.3 hours.

Let's calculate the values.

Calculation

The amount of raspberries collected from the second bush (x) can be calculated as follows: x = 1.8 / 0.4 = 4.5 kg.

Therefore, the amount of raspberries collected from the first bush is: x + 1.8 = 4.5 + 1.8 = 6.3 kg.

The time spent collecting raspberries from each bush can be calculated as follows: - From the first bush: (x + 1.8) * 0.3 = 6.3 * 0.3 = 1.89 hours. - From the second bush: x * 0.3 = 4.5 * 0.3 = 1.35 hours.

Answer

The girl spent 1.89 hours collecting raspberries from the first bush and 1.35 hours collecting raspberries from the second bush.

Note: The answer is rounded to two decimal places.