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What approximate value will come in plac...

What approximate value will come in place of the question ,mark (?) in the given questions? (You are not expected to calculate the exact value)
`3089.92-930.02-?=21.92xx49.93`

A

1030

B

900

C

1060

D

1080

Text Solution

AI Generated Solution

The correct Answer is:
To solve the equation \( 3089.92 - 930.02 - ? = 21.92 \times 49.93 \), we will approximate the values and find the value that will replace the question mark (?). ### Step-by-Step Solution: 1. **Approximate the numbers**: - Round \( 3089.92 \) to \( 3090 \). - Round \( 930.02 \) to \( 930 \). - For the multiplication, round \( 21.92 \) to \( 22 \) and \( 49.93 \) to \( 50 \). 2. **Rewrite the equation with approximated values**: \[ 3090 - 930 - ? = 22 \times 50 \] 3. **Calculate the right side**: \[ 22 \times 50 = 1100 \] 4. **Rewrite the equation**: \[ 3090 - 930 - ? = 1100 \] 5. **Calculate \( 3090 - 930 \)**: \[ 3090 - 930 = 2160 \] 6. **Substitute back into the equation**: \[ 2160 - ? = 1100 \] 7. **Isolate the question mark**: \[ ? = 2160 - 1100 \] 8. **Calculate the value**: \[ ? = 1060 \] Thus, the approximate value that will come in place of the question mark (?) is **1060**.
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