What approximate value should come in place of the question mark (?) in the following question? 6.18% of 599.90 + 399.81 ÷ 25.20 = 17.98 × 7.68 – 23.05 × ?

What approximate value should come in place of the question mark (?) in the following question? 6.18% of 599.90 + 399.81 ÷ 25.20 = 17.98 × 7.68 – 23.05 × ? Correct Answer 4

Follow BODMAS rule to solve this question, as per the order given below,

Step-1- Parts of an equation enclosed in 'Brackets' must be solved first, and in the bracket,

Step-2- Any mathematical 'Of' or 'Exponent' must be solved next,

Step-3- Next, the parts of the equation that contain 'Division' and 'Multiplication' are calculated,

Step-4- Last but not the least, the parts of the equation that contain 'Addition' and 'Subtraction' should be calculated.

Given Expression,

6.18% of 599.90 + 399.81 ÷ 25.20 = 17.98 × 7.68 – 23.05 × ?

We can also write values as:

6.18 ≈ 6, 599.90 ≈ 600, 399.81 ≈ 400, 25.20 ≈ 25, 7.68 ≈ 8, 23.05 ≈ 23, 17.98 ≈ 18

Given expression becomes,

⇒ 6% of 600 + 400 ÷ 25 = 18 × 8 – 23 × ?

⇒ 6/100 × 600 + 16 = 18 × 8 – 23 × ?

⇒ 36 + 16 = 144 – 23 × ?

⇒ 52 = 144 – 23 × ?

⇒ 23 × ? = 92

⇒ ? = 92/23