Question

Сгорела одна четвёртых свечи и ещё 5 см. Высота свечи стала равной 4 см. Какой была высота свечи первоначально.Заранее спасибо!

Answer 1

1) 4 + 5 = 9 (см) - 25 % от свечи
2) 9 * 4 = 36 (см) - свеча
Ответ: 36 см

Answer 2

4+5=9 (см)- это 3/4 всей свечи

тогда 3 (см) это 1/4

целая свеча 12 см

Answer 3

Calculation of the Initial Height of the Candle

To find the initial height of the candle, we can set up a proportion using the information given. Let's denote the initial height of the candle as x.

According to the problem, when one-fourth of the candle burned, the height decreased by 5 cm, and the new height became 4 cm. We can set up the following proportion:

(1/4)x = 5 cm

To find the initial height, we can solve this equation for x.

(1/4)x = 5 cm

Multiplying both sides of the equation by 4:

x = 20 cm

Therefore, the initial height of the candle was 20 cm.