I have my GCSE maths tommorow so please answer Watch

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#1
Report 16 years ago
#1
I am stuck

question is

29 men and 43 women took a maths exam

The mens mean mark was 73
The womens mean mark was 85

Find the mean mark for all the stidents
Give your answer to decimal places

(3 marks)

Thanks in advance
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mensandan
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#2
Report 16 years ago
#2
get the total score:

Men: 29 x 73 = 2117
Women: 43 x 85 = 3655

Add them up:

5772 by 29 + 43 people = 72 people

5772/72 = 80 1/6
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tomlegge
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#3
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#3
(29x73) +(45x83) Find Answer then:

Divide by (29+45)




Answer is 79.08
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tomlegge
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#4
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oops sorry right working but misread figures...that doesnt bode well :-(
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mensandan
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#5
Report 16 years ago
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However you have put in 45 women instead of 43, as such your answer is slightly inaccurate, Dan
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tomlegge
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#6
Report 16 years ago
#6
i know. really inspires confidence! :-(
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