I don't understand any of this (this is an assignment that's due today) Please help me and please give the right answer

Step-by-step explanation:

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30 divided by 3/4 is greater than 30 x 3/4.

In multiplying fractions, simply multiply its numerators and denominators. Then, simplify the fraction.
 
30 * 3/4 = 30*3 / 4 = 90/4 = 22.50

In dividing fractions, we first get the reciprocal of the 2nd fraction. then multiply the 1st fraction to the reciprocal of the 2nd fraction. Steps in multiplying fractions apply.
30 ÷ 3/4 = 30 * 4/3 = 30*4 / 3 = 120/3 = 40.

30 in the multiplication is the whole or 100 percent, the 3/4 of it is smaller than 30.

30 in division is the part of a whole, 30 is the 3/4 or the part of the whole. that is why 30 divide by 3/4 is greater.