What is the number if the sum of twice a number and half the number equals 10?

To solve the problem, let’s start by defining the unknown number as x.

According to the given condition, we can write the equation as follows:

2x + (1/2)x = 10

Now, we will combine the terms on the left side of the equation. First, notice that (1/2)x is equivalent to 0.5x. Thus, our equation transforms into:

2x + 0.5x = 10

Next, let’s add 2x and 0.5x:

  • 2x + 0.5x = 2.5x

So, we can rewrite the equation as:

2.5x = 10

To find x, we divide both sides of the equation by 2.5:

x = 10 / 2.5

Calculating this gives us:

x = 4

Thus, the number we are looking for is 4. To confirm our solution, we can substitute x = 4 back into the original problem:

Calculating:
2(4) + (1/2)(4) = 8 + 2 = 10. This is indeed correct!

In conclusion, the number that satisfies the condition is 4.

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