Let n be an integer that can be represented by 2^ a 3^ b 5^ c If a, b and care integers such that 0<a<b<c and a + b + c = 7 what is a possible value for n? A. 4500
B. 11250
C. 2700
D. 46875
E. 6750

In 1919, the temperance movement finally succeeded. they secured ratification of a constitutional amendment (the that banned alcoholic beverages. prohibition began with the 1920 passage of the which enforced the amendment.

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Raul has one solution that is 20% acid by volume and one solution that is 50% acid by volume. he plans to mix together some of each solution to create 30 milliliters of a solution that is 40% acid by volume. how many milliliters of the 20% acid solution should raul use to create the 40% acid solution? can someone explain this to me? i know that the answer is 10 milliliters, but i don't know how to get it.