What approximate value should come in the place of question (?) mark.

$\frac{840.03}{?}$ + ${\left(7.99\right)}^3$ = 90.03 % of 599.99 + 7.993

The correct option is 28.

To find the approximate value of the question mark (?), we can round each decimal value in the given equation to its nearest whole number or easy-to-calculate integer value.

Given equation:

$\frac{840.03}{?}$ + ${\left(7.99\right)}^3$ = 90.03 % of 599.99 + 7.993

Step 1: Round off the numbers to their nearest approximations

• 840.03 ≈ 840
• 7.99 ≈ 8
• 90.03% ≈ 90%
• 599.99 ≈ 600
• 7.993 ≈ 83 = 2

Step 2: Substitute the approximated values back into the equation

$\frac{840}{?}$ + $8^3$ = (90 % of 600) + 2

Step 3: Calculate the individual terms

• $8^3$ = 8 × 8 × 8 = 512
• 90 % of 600 = $\frac{90}{100}$ × 600 = 90 × 6 = 540

Step 4: Rewrite and simplify the equation

$\frac{840}{?}$ + 512 = 540 + 2

$\frac{840}{?}$ + 512 = 542

Step 5: Solve for (?)

Subtract 512 from both sides of the equation:

$\frac{840}{?}$ = 542 - 512

$\frac{840}{?}$ = 30

Now, divide 840 by 30 to find the value of (?):

? = $\frac{840}{30}$

? = 28

Hence, the approximate value that comes in place of the question mark is 28.