Question

Рулон обоев стоит 120 рублей 60 копеек. Какое количество рулонов можно купить на 1000 рублей, если скидка составила 10% ?

Answer 1

за 120р60 к. они смогут купить примерно 8 рулонов, а так как скидка 10% состовляем соотношение: 120.60 - 100%

                                            х     -  90%

перекрёстным умножением мы находим что х=108,54 ; 1000/108,54 это примерно будет равно 9 т.е. за  скидку 10% они могут купить 9 рулонов

Answer 2

Calculation of the Number of Wallpaper Rolls

To calculate the number of wallpaper rolls that can be purchased for 1000 rubles with a 10% discount, we need to follow these steps:

1. Calculate the price of one wallpaper roll after the discount. 2. Divide the total budget of 1000 rubles by the price of one roll after the discount to find the number of rolls that can be purchased.

Let's proceed with the calculation:

1. Calculate the price of one wallpaper roll after the discount: - The original price of one roll is 120 rubles and 60 kopeks. - The discount is 10%. - To calculate the discounted price, we need to subtract 10% of the original price from the original price. - The discounted price of one roll can be calculated as follows:

Original price of one roll = 120 rubles + 60 kopeks = 120.60 rubles Discounted price of one roll = Original price of one roll - (10% of the original price) = 120.60 rubles - (10% of 120.60 rubles) = 120.60 rubles - (0.10 * 120.60 rubles) = 120.60 rubles - 12.06 rubles = 108.54 rubles

Therefore, the price of one wallpaper roll after the 10% discount is 108.54 rubles.

2. Calculate the number of rolls that can be purchased for 1000 rubles: - Divide the total budget of 1000 rubles by the price of one roll after the discount. - The number of rolls that can be purchased can be calculated as follows:

Number of rolls = Total budget / Price of one roll after discount = 1000 rubles / 108.54 rubles ≈ 9.21 rolls

Since we cannot purchase a fraction of a roll, we need to round down to the nearest whole number. Therefore, the number of wallpaper rolls that can be purchased for 1000 rubles with a 10% discount is 9 rolls.

Please note that the calculated number of rolls may vary depending on the rounding method used.