find the ratio of the number of cups of sugar to the number of cups of flour for 3 cups of flour and 1 2/3 cups of sugar.
1 2/3 : 3
= 5/3: 3
= 5 : 9
To find the ratio of the number of cups of sugar to the number of cups of flour, you need to divide the number of cups of sugar by the number of cups of flour.
Given that there are 3 cups of flour and 1 2/3 cups of sugar, we first need to convert 1 2/3 cups to a fraction. To do this, we multiply the whole number (1) by the denominator of the fraction, which is 3, and then add the numerator (2). So 1 2/3 is equivalent to (1 * 3 + 2)/3, which simplifies to 5/3.
Now we can calculate the ratio by dividing the number of cups of sugar (5/3) by the number of cups of flour (3):
Ratio = (Number of cups of sugar) / (Number of cups of flour)
= (5/3) / 3
= 5/3 * 1/3
= 5/9
Therefore, the ratio of the number of cups of sugar to the number of cups of flour is 5:9 or 5/9.