AFCT Arithmetic Reasoning Practice Test 2026 – Comprehensive Exam Prep

To find out how many marbles Jane has left after giving some away, we start with the total number of marbles she initially has, which is 60. When Jane gives 18 marbles to her friend, we need to subtract that amount from her total.

The calculation is straightforward:

60 (initial marbles) - 18 (marbles given to friend) = 42 marbles left.

Thus, Jane has 42 marbles remaining after giving 18 to her friend. This confirms the correctness of the chosen answer. The other options can be checked as follows: subtracting a different amount or not performing the subtraction correctly would lead to the other figures, but the number 42 accurately reflects the remaining marbles.