Jack scored a total of 175 marks for english and mathematics. he scored a total of 164 marks for english and science. he scored 11 more marks for english than for mathematics. what was his score for science?

let English marks =E

Maths marks = M

Science marks =S

E+M=175 (1)

E+S=164(2)

E=M+11(3)

PLUGGING VALUE OF "E" IN EQUATION (2) FROM (3)

M+11 +S=164

S=153-M(4)

PLUGGING VALUE OF "E" IN EQUATION (1) FROM (3)

M+11+M=175

2M=164

M=82

PLUGGING THIS VALUE OF 'M' IN EQUATION (4)

S=153-82

S=71

SCORE OF SCIENCE IS 71

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in which figure is point g a centroid

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