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What value will come in place of questio...

What value will come in place of question mark (?) in the questions given below?
`4 3/4 xx 2 1/2 - 2 3/4 = ?`

A

`9 2/16`

B

`7 13/16`

C

`9 9/16`

D

`7 17/19`

Text Solution

AI Generated Solution

The correct Answer is:
To solve the equation \( 4 \frac{3}{4} \times 2 \frac{1}{2} - 2 \frac{3}{4} = ? \), we will follow these steps: ### Step 1: Convert Mixed Numbers to Improper Fractions First, we need to convert the mixed numbers into improper fractions. 1. **Convert \( 4 \frac{3}{4} \)**: \[ 4 \frac{3}{4} = \frac{4 \times 4 + 3}{4} = \frac{16 + 3}{4} = \frac{19}{4} \] 2. **Convert \( 2 \frac{1}{2} \)**: \[ 2 \frac{1}{2} = \frac{2 \times 2 + 1}{2} = \frac{4 + 1}{2} = \frac{5}{2} \] 3. **Convert \( 2 \frac{3}{4} \)**: \[ 2 \frac{3}{4} = \frac{2 \times 4 + 3}{4} = \frac{8 + 3}{4} = \frac{11}{4} \] ### Step 2: Substitute the Improper Fractions into the Equation Now we can rewrite the equation using the improper fractions: \[ \frac{19}{4} \times \frac{5}{2} - \frac{11}{4} \] ### Step 3: Perform the Multiplication Next, we multiply the two fractions: \[ \frac{19}{4} \times \frac{5}{2} = \frac{19 \times 5}{4 \times 2} = \frac{95}{8} \] ### Step 4: Subtract the Fractions Now we need to subtract \( \frac{11}{4} \) from \( \frac{95}{8} \). To do this, we need a common denominator. The least common multiple (LCM) of 8 and 4 is 8. 1. Convert \( \frac{11}{4} \) to have a denominator of 8: \[ \frac{11}{4} = \frac{11 \times 2}{4 \times 2} = \frac{22}{8} \] 2. Now perform the subtraction: \[ \frac{95}{8} - \frac{22}{8} = \frac{95 - 22}{8} = \frac{73}{8} \] ### Step 5: Convert the Result Back to a Mixed Number To convert \( \frac{73}{8} \) back to a mixed number: 1. Divide 73 by 8: - 8 goes into 73 a total of 9 times (since \( 8 \times 9 = 72 \)). - The remainder is \( 73 - 72 = 1 \). Thus, we can express \( \frac{73}{8} \) as: \[ 9 \frac{1}{8} \] ### Final Answer The value that will come in place of the question mark (?) is: \[ 9 \frac{1}{8} \] ---
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