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The mean marks for a french test in a class of 30 boys and 20 girls are 60 and 70 respectively. find the mean mark for the whole class​

The mean marks for a french test in a class of 30 boys and 20 girls are 60 and 70 respectively. find the mean mark for the whole class​
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1 vote
the mean marks for a french test in a class of 30 boys and 20 girls are 60 and 70 respectively. find the mean mark for the whole class​

asked
User Courtney Miles
by
8.4k points

1 Answer

1 vote

Answer:

30×60=1800

20×70=1400

1400+1800

3200÷(30+20)

3200÷50

64

the mean mark is 64

answered
User Nick Fortescue
by
8.7k points
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