Question

Waleed thinks of a number. He subtracts 4.5 and multiplies the result by 12. His answer is 32.4.

Answer 1

Answer:

7.2

Step-by-step explanation:

32.4÷12=2.7

2.7+4.5=7.2

Answer 2

Answer:

The original number is ✔

Step-by-step explanation:

Given that,

Waleed thinks of a number. He subtracts 4.5 from it and multiplies the result by 12 and gets 32.4

Here, we need to find the original number which will result to 32.4 after the calculation.

Step 1 :

Let's assume the number that waleed thought as ‘x’

Step 2 :

Subtract 4.5 from ‘x’

→ (x - 4.5)

Step 3 :

Multiply the result i.e. (x - 4.5) by 12

→ 12(x - 4.5)

Step 4 :

As the calculation results to 12

We can say that,

→ 12(x - 4.5) = 32.4

Solving for ‘x’

→ 12x - 54 = 32.4

→ 12x = 32.4 + 54

→ 12x = 86.4

→ x = 86.4/12

→ x = 7.2

∴ The original number is 7.2 ✔