The total marks obtained by a student in physics , chemistry, mathematics is 150 more than the marks obtained by him in physics. What is the average marks obtained by him in chemistry and mathematics?
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Let take Subjects Physics as x , Chemistry as y and Maths as z
According to 1st condition
x + y + z = 120 + y.
x + y - y + z = 120
x + z = 120
Average marks = x + z/2 =?
120 / 2 = 60
hence answer the average marks
obtained by
him in Physics and Math is 60
According to 1st condition
x + y + z = 120 + y.
x + y - y + z = 120
x + z = 120
Average marks = x + z/2 =?
120 / 2 = 60
hence answer the average marks
obtained by
him in Physics and Math is 60
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