Question 14

8,5/24

The sum of 2,3/8 and 5,5/6 equals 8,5/24 when converted to a common denominator and added correctly.

A) 7,5/24

This option is incorrect because it underestimates the total value obtained from adding 2,3/8 and 5,5/6. The correct calculations show that the sum is greater than this value.

B) 7,4/7

This option is also incorrect as it does not represent the correct sum of the fractions. The mixed number format here does not align with the proper addition of the given fractions.

C) 8,5/24

This is the correct answer, as after converting both fractions to a common denominator and performing the addition, the resulting sum equals 8,5/24, accurately reflecting the total.

D) 8,4/7

This option is incorrect because, while it is a mixed number, it does not accurately represent the sum of the fractions. The value calculated from adding 2,3/8 and 5,5/6 exceeds this option.

Conclusion

The correct answer, 8,5/24, accurately represents the sum of the two fractions when calculated correctly. Each of the other options fails to provide the correct total, either by underestimating the sum or misrepresenting the mixed number format. Thus, option C is definitively the right choice.