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Class 10r sat a test the mean mark was 70% there are thirty students in class 10r, 20 of whom are boys the mean mark for the boys in the test was 62% work out the mean of the gi…

Class 10r sat a test the mean mark was 70% there are thirty students in class 10r, 20 of whom are boys the mean mark for the boys in the test was 62% work out the mean of the gi…
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3 votes
Class 10r sat a test

the mean mark was 70%

there are thirty students in class 10r, 20 of whom are boys
the mean mark for the boys in the test was 62%

work out the mean of the girls

asked
User Tien Dinh
by
8.4k points

1 Answer

1 vote

Answer:

15% tell me if im wrong

Explanation:

answered
User Albertina
by
8.0k points
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