Question 40

3 & 9/10

The result of subtracting 3 4/5 from 7 7/10 is 3 & 9/10. This calculation shows a correct understanding of mixed numbers and their subtraction.

A) 4 & 1/10

This option is incorrect. The subtraction of 3 4/5 from 7 7/10 does not yield 4 & 1/10. Instead, it results in a smaller value after proper calculation, indicating that this option misrepresents the outcome of the operation.

B) 11 & 1/2

This option is also incorrect. The result of the subtraction cannot exceed the value of the larger mixed number, 7 7/10, making 11 & 1/2 an impossible outcome for this operation.

C) 4 & 3/5

This option is incorrect as well. While this value is closer to the correct answer than some others, it still does not accurately represent the result of the subtraction. The calculation shows that the correct result is lower than this option.

D) 3 & 9/10

This option is correct. When performing the subtraction, 7 7/10 minus 3 4/5 results in 3 & 9/10, confirming this as the accurate answer to the equation.

Conclusion

The correct answer, 3 & 9/10, is derived from accurately subtracting the two mixed numbers, demonstrating a clear understanding of the operation involved. Other options fail to represent the correct calculation, either by being too high or miscalculating the resultant value from the subtraction.