Directions: Find the approximate value that should come in place of 'x' in the following equation.

$\frac{639.89}{16}+7.95+18=x\%\text{of}49.98$

The correct option is 132.

To find the approximate value of x, we can round each decimal number in the given equation to its nearest whole number or convenient value for easy calculation.

Given Equation:

$\frac{639.89}{16}+7.95+18=x\%\text{of}49.98$

Step 1: Round off the numbers to their nearest approximations:

• $639.89\approx 640$
• $7.95\approx 8$
• $49.98\approx 50$

Step 2: Substitute the approximated values into the equation:

$\frac{640}{16}+8+18=x\%\text{of}50$

Step 3: Simplify the left-hand side (LHS) of the equation:

First, perform the division:

$\frac{640}{16}=40$

Now, add the numbers on the LHS:

$40+8+18=66$

Step 4: Simplify the right-hand side (RHS) and solve for x:

$66=\frac{x}{100}\times 50$

$66=\frac{x}{2}$

Multiplying both sides by 2:

$x=66\times 2$

$x=132$

Thus, the approximate value that should come in place of 'x' is 132.