Question

Сгорела 1/5 свечи и еще 3 см.высота свечи стала равной 5 см.какой была высота свечи первоначально?

Answer 1

5-3=2 см - 1/5 часть свечи
2*5=10 см - первоначальная высота свечи.

Answer 2

Calculation of the Initial Height of the Candle

To determine the initial height of the candle, we can use the information provided. We know that 1/5 of the candle has burned and the height of the candle has decreased by 3 cm, resulting in a final height of 5 cm.

Let's assume the initial height of the candle is represented by x cm.

According to the given information, 1/5 of the candle has burned, which means 4/5 of the candle remains. This can be represented as:

4/5 * x = 5 cm

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

Multiplying both sides of the equation by 5/4, we get:

x = (5 cm) * (5/4) = 6.25 cm

Therefore, the initial height of the candle was 6.25 cm.

Answer:

The initial height of the candle was 6.25 cm.