Question

twice a number, added half of the same number equals 30. what is the number​

Answer 1

Answer:

Let the no. be x.

2x+x/2=30

4x+x=60

5x=60

x=12

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Answer 2

Answer:

12 is the required no.

Step-by-step explanation:

Let the no. be x.

Twice the no. = 2x

Half the no. = x/2

Then, According to the question,

2x + x/2 = 30

Taking LCM,

(4x+x)/2 = 30

Transposing 2 to RHS

4x +x = 30*2 = 60

5x = 60

Transposing 5 to RHS,

x = 60/5

x = 12

Hence, the required no. is 12.

Verification:-

2x + x/2 = 30

Put x = 12.

LHS = 2(12) + (12/2) = 24 + 6 = 30

RHS = 30

LHS = RHS

Hence, x = 12 satisfies the above equation.