Question

find the number whose double is 45 greater than its half?

Answer 1

let the number be a
2a = a/2 + 45
2a - a/2 = 45
3/2a = 45
a = 45 × 2/3
a = 30

the number is 30

Answer 2

Answer:

30

Step-by-step explanation:

Let the no. be x.

2x = x/2 + 45

2x - x/2 = 45

4x-x / 2 = 45

3x = 90

x = 30

Therefore, the required number is 30.