There are 100 students in a class 40 of them are girls the average marks of the boys in science is 75 percent find the average marks of the class in science
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No. of girls =40
Average marks of girls in science =65%
total marks of the 40 girls in science= 65 * 40 = 2600
No. of boys =100-40=60
Average marks of boys in science =75%
total marks of the 60 boys in science= 75 * 60 = 4500
total marks of the all the students (100) in science = 2600+4500= 7100
average marks of the class in science = 7100/100 = 71 %
No. of girls =40
Average marks of girls in science =65%
total marks of the 40 girls in science= 65 * 40 = 2600
No. of boys =100-40=60
Average marks of boys in science =75%
total marks of the 60 boys in science= 75 * 60 = 4500
total marks of the all the students (100) in science = 2600+4500= 7100
average marks of the class in science = 7100/100 = 71 %
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