Question

Twice a number added to its half is 25 Find the number

Answer 1

Let the no. be x
So,
2x + x/2 = 25
5x = 25 × 2
x = 50/5

x = 10

Answer 2

Concept

In a rigorous way, logical reasoning uses premises and relations between premises to derive conclusions that are inferred (or necessitated) by the premises and the connections.

Given

Twice a number added to its half is 25 is given

Find

We need to find the number

Solution

Let the number be x

Now it is given that twice a number means 2x

Added to its half 25 that is  2x + x/2 = 25

Simplifying the equation 2x + x/2 =25

We get ,

4x+x = 25*2

5x = 50

x =10

Hence the number is 10

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