Mr. davis's students were surveyed on their favorite subject. one fifth prefer math, 0.35 prefer social studies, and 45% prefer reading/literature. order the subjects from least to greatest.

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

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answer: all of the odd numbers were opened

the first person was the one that was opening all of the lockers. since one is odd, this causes all of the odd number lockers to be opened in the end.