I would recommend her to use kilograms:
grams are the standard weight unit used in the majority of the countries and in science- that's why it's better than pounds.
But kilograms are better than grams, since a watermelon weights around 2 kg, so it's easier to remember than 2000 grams.
Difference-equals-deficit error. This is the mistaken belief that a deviation from some norm is necessarily inferior to behavior or characteristics that meet the standard. An example of this is concluding that someone who is different from us is different.
The answer is 2/3 , you go up 2 and to the right 3 which means it is a positive slope of 2/3.
3 ft = 12 * 3 = 36 inches wide
36 / (3/4) =
36 * 4/3 =
144/3 =
48 books can fit