An enticing illustration related to baking. The image features a brightly lit kitchen counter topped with various cookie-making ingredients including eggs, sugar, butter, and notably, a measuring cup with flour. A desaturated hand is seen reaching towards an open recipe book with a written cookie recipe, albeit unnoticeable. Also displayed, is the process of bread dough, halfway through, already prepped in a mixing bowl. The colors are warm, with natural sunlight beaming into the kitchen space.

A batch of cookies calls for 3/4 cup of flour. You want to make 1 1/2 of a batch. How much flour do you need?

How did you go from 9/8 to 1 1/8?

1 1/2 = 3/2

when multiplying fraction you multiply straight across.
3/4 * 3/2 = 9/8

Well, I must say, you really want to go big on the cookies! Alright, let me calculate this for you. If 1 batch requires 3/4 cup of flour, then let's multiply that by 1 1/2.

To make 1 1/2 batches, you would need to double the amount of flour required for a single batch. Therefore, 3/4 cup of flour times 2 is... *drumroll please* ... 1 1/2 cups of flour! So, grab your jumbo-sized flour bag, and get ready to bake those colossal cookies!

To find out how much flour you need for 1 1/2 batches of cookies, you need to multiply the amount of flour needed for one batch by 1 1/2.

Since one batch requires 3/4 cup of flour, we can multiply it by 1 1/2 as follows:

(3/4) * (1 1/2)

To multiply a fraction by a whole number, you simply multiply the numerator (the top number) by the whole number. In this case, we multiply the fraction 3/4 by the whole number 1:

(3/4) * 1 = 3/4

Now, to multiply a fraction by a fraction, you multiply the numerators (top numbers) together to get the new numerator and the denominators (bottom numbers) of the fractions together to get the new denominator:

(3/4) * (1/2) = (3*1) / (4*2) = 3/8

Therefore, you need 3/8 cup of flour for 1 1/2 batches of cookies.

3/4 * 1 1/2 = 3/4 * 3/2 = 9/8 or 1 1/8 cups

or, as a proportion
x/(1 1/2) = (3/4) / 1