Question

За 3кг моркови и 5кг картофеля заплатили 135 рублей.1 кг моркови дороже 1кг картофеля на 15 рублей. Сколько стоит 1 кг моркови?

Answer 1

20рубл моркковы 1килограм

Answer 2

Пусть х-1кг кортофеля,тогда 15+х -1кг моркови.Получим
5х+3(х+15)=135
5х+3х+45=135
8х=90
х=90/8
х=28,125
Значит 28,125 рублей-стоит 1кг картофеля.
2) 15+28,125=43,125 рублей-1кг моркови.

Надеюсь я помог)

Answer 3

Calculation of the Cost of Carrots

To find the cost of 1 kg of carrots, we need to determine the individual prices of carrots and potatoes. Let's assume that the price of 1 kg of potatoes is x rubles. According to the given information, 1 kg of carrots is 15 rubles more expensive than 1 kg of potatoes. Therefore, the price of 1 kg of carrots can be expressed as (x + 15) rubles.

We also know that 3 kg of carrots and 5 kg of potatoes were purchased for a total of 135 rubles. Using this information, we can set up the following equation:

3(x + 15) + 5x = 135

Simplifying the equation, we get:

3x + 45 + 5x = 135

Combining like terms:

8x + 45 = 135

Subtracting 45 from both sides:

8x = 90

Dividing both sides by 8:

x = 11.25

Therefore, the price of 1 kg of potatoes is 11.25 rubles.

To find the price of 1 kg of carrots, we can substitute the value of x into the expression (x + 15):

(11.25 + 15) = 26.25

Therefore, 1 kg of carrots costs 26.25 rubles.