If 15 students participated in a quiz and the ratio of correct to incorrect answers is 4:11, how many correct answers were there?

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Q1.

What is the ratio of urad dal to rice in a mixture of 2 cups of rice and 1 cup of urad dal?

Q2.

If 6 cups of rice are mixed with 3 cups of urad dal, what is the simplified ratio of rice to urad dal?

Q3.

Which of the following ratios is proportional to 4:2?

Q4.

Are the mixtures of 6:3 and 4:2 proportional?