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Muli obtain a total score of 180 marks in English, Mathematics and Science. His score in English was half the score obtained in Mathematics. The score in mathematics was 10 more than the score obtained in science. If the score obtained in science is represented by x, which one of the equations below can be used to get the value of x?
A.#2 1/2x+15=180#
B.#2 1/2x-15=180#
C.#4x+30=180#
D. #x+15=180#