Question

3.В сентябре 1 кг винограда стоил 60 рублей, в октябре виноград подорожал на 25%, а в ноябре еще на 20%. Сколько рублей стоил 1 кг винограда после подорожания в ноябре?

Answer 1

60 рублей - начальная цена
в Октябре подорожал на 25%
60 - 100%
 х  - 125%
х = 60*125/100 = 75 рублей - цена в октябре
В ноябре подорожал еще на 20%
75 - 100%
 х  - 120%
х = 75*120/100 = 90 рублей.
Ответ: цена винограда в ноябре будет 90 рублей.

Answer 2

Calculation of the Price Increase for Grapes

To calculate the price of 1 kg of grapes after the price increase in November, we need to consider the initial price in September and the subsequent increases in October and November.

According to the information provided, in September, 1 kg of grapes cost 60 rubles In October, the price of grapes increased by 25% In November, the price of grapes increased by an additional 20%.

Calculation Steps:

1. Calculate the price increase in October: - Price increase in October = 25% of the September price - Price increase in October = 25/100 * 60 rubles = 15 rubles

2. Calculate the price after the October increase: - Price in October = September price + Price increase in October - Price in October = 60 rubles + 15 rubles = 75 rubles

3. Calculate the price increase in November: - Price increase in November = 20% of the October price - Price increase in November = 20/100 * 75 rubles = 15 rubles

4. Calculate the price after the November increase: - Price in November = October price + Price increase in November - Price in November = 75 rubles + 15 rubles = 90 rubles

Therefore, after the price increase in November, 1 kg of grapes would cost 90 rubles.

Please note that the calculations are based on the information provided and may not reflect the actual market prices.