Question

Настольная лампа стоит 500 рублей. Сначала цену на неё понизили на 17%, а затем повысили на 17%. Какова новая цена настольной лампы?

Answer 1

1) 500 - 500 • 17 / 100 = 415.
2) 415 • 117 / 100 = 485,55
Ответ: 485,55 руб.

Answer 2

Calculating the New Price of the Desk Lamp

The initial price of the desk lamp is 500 rubles. First, the price was reduced by 17%, and then it was increased by 17%. We need to calculate the new price after these changes.

1. Calculate the Price After the First Change (17% Reduction) - The price was reduced by 17%. - Calculation: 500 - (17% of 500) - New price after the reduction: 500 - (0.17 * 500) = 500 - 85 = 415 rubles.

2. Calculate the Price After the Second Change (17% Increase) - The reduced price is now increased by 17%. - Calculation: 415 + (17% of 415) - New price after the increase: 415 + (0.17 * 415) = 415 + 70.55 = 485.55 rubles.

Conclusion

The new price of the desk lamp after the initial 17% reduction followed by a 17% increase is approximately 485.55 rubles.