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Pupils in classes 5,6,7 and 8 were to raise funds for a party. Class 7 raised sh. X while class 5 raised #1/3# of what class 7 raised. Class 6 raised sh. 100 less than the total amount raised by both class 5 and 7. Class 8 raised sh.200 more than class 7. If the total amount raised was sh. 6900, which one of the following equations can be used to find the amount raised by each class?
A.#x+1/3x+100=6900#
B.#3x+2/3x-300=6900#
C. #3x+2/3x+300=6900#
D.#3x+2/3x+100=6900#