Eugene's grandmother is teaching him how to make her salsa recipe. Each batch of salsa requires 1/4 of a cup of red onions. If they have 1 1/2

cups of red onions, how many batches of salsa can they make?

1 2/4 = 6/4 cups available

(1/4) * n = 6/4
n = 6

To find out how many batches of salsa Eugene and his grandmother can make, you need to divide 1 1/2 cups of red onions by 1/4 cup, which is the amount required for each batch.

To divide fractions, you can follow these steps:
1. Convert the mixed number (1 1/2) to an improper fraction. Multiply the whole number (1) by the denominator of the fraction (2) and add the numerator (1) to get 3/2 cups.
2. Invert the divisor (1/4) by flipping the numerator and denominator, resulting in 4/1.
3. Multiply the dividend (3/2) by the inverted divisor (4/1). This can be done by multiplying the numerators and denominators straight across: (3/2) × (4/1) = (3 × 4) / (2 × 1) = 12/2 = 6.

Therefore, Eugene and his grandmother can make 6 batches of salsa with 1 1/2 cups of red onions.

To figure out how many batches of salsa they can make with 1 1/2 cups of red onions, we need to divide the total amount of onions by the amount needed for one batch.

1 1/2 cups of red onions is the same as 1 + 1/2 = 3/2 cups.

Since each batch requires 1/4 of a cup of onions, we can divide 3/2 by 1/4:

(3/2) ÷ (1/4)

To divide fractions, we can multiply the dividend (top number) by the reciprocal of the divisor (bottom number):

(3/2) * (4/1)

Multiplying the numerators (top numbers) gives us 3 * 4 = 12, and multiplying the denominators (bottom numbers) gives us 2 * 1 = 2:

12/2 = 6

Therefore, Eugene and his grandmother can make 6 batches of salsa with 1 1/2 cups of red onions.