To find the quotient Two-fifths divided by one-fourth,
multiply Two-fifths by 4.
multiply Two-fifths by One-fourth.
multiply Five-halves by One-fourth.
multiply Five-halves by 4.
To do this, you keep the first number, so options 3 and 4 are out. You do change the operation to multiplication, but you flip the other number. In this case, that would eliminate 2, and the answer would be option 1. 2/5 times 4.
