Question 61

1/2

To find the result of 9/10 - 2/5, we first convert 2/5 to a fraction with a common denominator of 10, which gives us 4/10. Subtracting 4/10 from 9/10 results in 5/10, which simplifies to 1/2.

A) 1/2

This option is correct as it represents the simplified result of the subtraction. After converting 2/5 to 4/10 and performing the subtraction, we arrive at 5/10, which simplifies to 1/2.

B) 3/10

Option B is incorrect. If we calculated 9/10 - 2/5 without simplifying properly, we would mistakenly interpret the result, but the correct subtraction leads to a different value.

C) 4/10

Option C is incorrect as well. This option represents the fraction before simplification, but it does not reflect the correct result of the subtraction, which simplifies further to 1/2.

D) 1/4

Option D is incorrect. This fraction does not relate to the calculation of 9/10 - 2/5 and does not represent the outcome of the operation performed.

Conclusion

The answer 1/2 is verified as the correct result of the subtraction operation, as it accurately reflects the simplified form of the difference between 9/10 and 2/5. All other options either misinterpret the arithmetic or represent fractions unrelated to the correct computation.