Question

Эльнуру 27,а Эльвину 5 лет.Через сколько лет Эльнур будет в 3 раза старше Эльвина?

Answer 1

Ответ 6 лет
27+x=3(5+x)
2x=12
X=6

Answer 2

Пусть через х лет Эльнур будет в 3 раза старше Эльвина, тогда:

(5+х)*3=х+27

15+3х=х+27

2х=12

х=6 лет. Через 6 лет Эльнур будет в 3 раза старше Эльвина.

Ответ: через 6 лет.

Answer 3

Let's represent the current ages of El'nur and El'vin as follows:

El'nur's age = E = 27 years El'vin's age = V = 5 years

Let's assume that after "x" years, El'nur will be three times as old as El'vin.

After "x" years: El'nur's age = E + x El'vin's age = V + x

According to the given condition: E + x = 3 * (V + x)

Now, let's solve for "x":

27 + x = 3 * (5 + x)

Now, distribute the 3 on the right side:

27 + x = 15 + 3x

Next, isolate the "x" terms on one side:

x - 3x = 15 - 27 -2x = -12

Now, solve for "x":

x = -12 / -2 x = 6

So, after 6 years, El'nur will be three times as old as El'vin:

El'nur's age after 6 years = 27 + 6 = 33 years El'vin's age after 6 years = 5 + 6 = 11 years

33 is indeed three times 11, as expected.