Question

Альбом стоил а р., а набор цветных карандашей b р. После повышения цен стоимость альбома возросла на 5%, а цветных карандашей - на 3%. В какую сумму обойдется покупка двух альбомов и одного набора цветных карандашей после повышения цен?

Answer 1

А -100%
х- 5%
х=а*5/100
х=а/20.
(a+a/20) - цена после повышения цены.
b -100%
х - 3%
х=b*3/100
x=3b/100.
(b+3b/100) - цена цветных карандашей после повышения цены.
2(а+а/20)+(b+3b/100)=2a+a/10+b+ 3b/100.- сумма 2 альбомов и набора карандашей.
Ответ: 2(а + а/20)+(b+3b/100)

Answer 2

Calculation of the Total Cost

To calculate the total cost of purchasing two albums and one set of colored pencils after the price increase, we need to know the initial prices of the album and the colored pencils, as well as the percentage increase for each item.

Let's assume that the initial price of the album is a rubles and the initial price of the colored pencils is b rubles. The album's price increased by 5%, and the colored pencils' price increased by 3%.

The new price of the album after the increase can be calculated as follows: new_album_price = a + (5/100) * a

The new price of the colored pencils after the increase can be calculated as follows: new_pencils_price = b + (3/100) * b

To find the total cost of purchasing two albums and one set of colored pencils, we add the prices of the albums and the set of colored pencils together: total_cost = 2 * new_album_price + new_pencils_price

Now let's substitute the values and calculate the total cost.

Calculation Steps

1. Let's assume the initial price of the album is 100 rubles (a = 100) and the initial price of the colored pencils is 50 rubles (b = 50). 2. Calculate the new price of the album after the increase: new_album_price = 100 + (5/100) * 100 = 100 + 5 = 105 rubles 3. Calculate the new price of the colored pencils after the increase: new_pencils_price = 50 + (3/100) * 50 = 50 + 1.5 = 51.5 rubles 4. Calculate the total cost of purchasing two albums and one set of colored pencils: total_cost = 2 * 105 + 51.5 = 210 + 51.5 = 261.5 rubles

Therefore, the purchase of two albums and one set of colored pencils after the price increase will cost 261.5 rubles.