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What approximate value should come in th...

What approximate value should come in the place of (?) mark :
`72.01% "of" (? + 224.98) = (14.01)^(2) + 199.99`

A

325

B

375

C

225

D

405

Text Solution

AI Generated Solution

The correct Answer is:
To solve the equation \( 72.01\% \text{ of } (? + 224.98) = (14.01)^2 + 199.99 \), we will follow these steps: ### Step 1: Approximate the values First, we approximate the numbers involved in the equation: - \( 72.01\% \) can be approximated to \( 72\% \). - \( 224.98 \) can be approximated to \( 225 \). - \( (14.01)^2 \) can be approximated to \( 14^2 \), which is \( 196 \). - \( 199.99 \) can be approximated to \( 200 \). So, the equation simplifies to: \[ 72\% \text{ of } (? + 225) = 196 + 200 \] ### Step 2: Simplify the right-hand side Now, we simplify the right-hand side: \[ 196 + 200 = 396 \] Thus, we have: \[ 72\% \text{ of } (? + 225) = 396 \] ### Step 3: Convert percentage to decimal Next, we convert \( 72\% \) to a decimal for easier calculations: \[ 72\% = \frac{72}{100} = 0.72 \] So, we can rewrite the equation as: \[ 0.72 \times (? + 225) = 396 \] ### Step 4: Isolate the variable Now, we isolate \( ? + 225 \) by dividing both sides by \( 0.72 \): \[ ? + 225 = \frac{396}{0.72} \] ### Step 5: Calculate the division Calculating \( \frac{396}{0.72} \): \[ \frac{396}{0.72} \approx 550 \] Thus, we have: \[ ? + 225 = 550 \] ### Step 6: Solve for ? Now, we solve for \( ? \): \[ ? = 550 - 225 \] \[ ? = 325 \] ### Final Answer Therefore, the approximate value that should come in place of the (?) mark is: \[ \boxed{325} \]
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