Question

За ручку и набор фломастеров заплатили 48 руб.набор фломастеров в 5 раз дороже ручки.сколько стоит ручка?сколько стоит набор фломастеров?сколько нужно заплатить за10 ручек?за 3 таких набора фломастеров?

Answer 1

Х- стоит ручка
тогда набор фломастеров-5х
х+5х=48
6х=48
х=48/6
х=8 (руб). -ручка
5*8=40 (руб).-набор фломастеров
10*5=50  (руб). -стоимость 10 ручек.
3*40=120 (руб)- 3 набора фломастеров

Answer 2

Calculation of the Cost of a Pen and a Set of Markers

To find the cost of a pen and a set of markers, we are given the following information:

- The total cost of a pen and a set of markers is 48 rubles. - The set of markers is 5 times more expensive than the pen.

Let's denote the cost of the pen as x and the cost of the set of markers as y.

From the given information, we can set up the following equations:

1. The total cost of a pen and a set of markers is 48 rubles: - x + y = 48.

2. The set of markers is 5 times more expensive than the pen: - y = 5x.

To solve this system of equations, we can substitute the value of y from equation 2 into equation 1:

x + 5x = 48.

Simplifying the equation:

6x = 48.

Dividing both sides by 6:

x = 8.

Now, we can substitute the value of x back into equation 2 to find the value of y:

y = 5(8) = 40.

Therefore, the cost of the pen is 8 rubles and the cost of the set of markers is 40 rubles.

Calculation of the Cost of 10 Pens and 3 Sets of Markers

To find the cost of 10 pens, we can multiply the cost of one pen by 10:

10 pens = 10 * 8 rubles = 80 rubles.

To find the cost of 3 sets of markers, we can multiply the cost of one set of markers by 3:

3 sets of markers = 3 * 40 rubles = 120 rubles.

Therefore, the cost of 10 pens is 80 rubles and the cost of 3 sets of markers is 120 rubles.