Question

Iara makes salad dressing by mixing 8 88 spoonfuls of oil and some vinegar. The tape diagram shows the ratio of oil to vinegar. A tape diagram with 2 tapes of unequal lengths. The first tape has 2 equal parts. A curved bracket above the first tape is labeled Oil. The second tape has 1 part of the same size as in the first tape. A curved bracket below the second tape is labeled Vinegar. A tape diagram with 2 tapes of unequal lengths. The first tape has 2 equal parts. A curved bracket above the first tape is labeled Oil. The second tape has 1 part of the same size as in the first tape. A curved bracket below the second tape is labeled Vinegar. Complete the table. Original ratio Amount (spoonfuls) Oil 8 88 Vinegar 1 11 Total dressing 3 33

Answer 1

Explanation:

Based on the information in the tape diagram and table, we can see that the ratio of oil to vinegar in Iara's salad dressing is 8 to 1. This means that for every 8 spoonfuls of oil, she uses 1 spoonful of vinegar.

To calculate the amount of oil and vinegar in the dressing, we can use the following formula:

amount = original ratio * total amount of dressing ÷ (original ratio + 1)

For the oil, the formula would be:

oil amount = 8 * 33 ÷ (8 + 1) = 8 * 33 ÷ 9 = 88 spoonfuls

And for the vinegar, the formula would be:

vinegar amount = 1 * 33 ÷ (8 + 1) = 1 * 33 ÷ 9 = 11 spoonfuls

So the final answer is:

Oil: 88 spoonfuls

Vinegar: 11 spoonfuls