Question

Тетрадь в клетку стоит 9рублей,альбом на 2раза дороже чем тетрадь,а ручка. на 5р дешевле чем альбом. поставь вопрос так,чтобы задача решалась двумя действиями

Answer 1

1) 9+2=11(руб.)- стоит альбом
2) 11-5=6(руб.)-стоит ручка.

Answer 2

1)9+2=11(р)-стоит альбом
2)11-5=6(р)-стоит ручка

Answer 3

Problem Analysis

To solve this problem, we need to determine the prices of an album and a pen based on the given information. The price of a notebook is given as 9 rubles, and the album is twice as expensive as the notebook. The pen is 5 rubles cheaper than the album. We need to find the prices of the album and the pen.

Problem Solving

To solve this problem in two steps, we can follow these steps:

Step 1: Determine the price of the album Since the album is twice as expensive as the notebook, we can calculate its price by multiplying the price of the notebook by 2. Let's denote the price of the album as A and the price of the notebook as N. We know that A = 2N.

Step 2: Determine the price of the pen The pen is 5 rubles cheaper than the album. We can calculate its price by subtracting 5 from the price of the album. Let's denote the price of the pen as P. We know that P = A - 5.

Now, let's substitute the value of A from Step 1 into the equation for P in Step 2 to find the price of the pen.

Solution

1. Let's denote the price of the notebook as N = 9 rubles. 2. The price of the album is twice as expensive as the notebook, so A = 2N = 2 * 9 = 18 rubles.3. The pen is 5 rubles cheaper than the album, so P = A - 5 = 18 - 5 = 13 rubles. Answer: The price of the album is 18 rubles, and the price of the pen is 13 rubles.

Please let me know if there is anything else I can help you with!