The mean marks of 10 men in class are 70, whereas the mean mark marks of 15 women is 60. The mean marks if all the 25 people are
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We are given that the mean marks of 10 men in a class are 70 Kg, whereas the mean marks of 15 women is 60. Hence, the mean marks of all the 25 people are 64.
Step-by-step explanation:
=> The mean marks of 10 men = 70
=> Total marks of 10 men = 70 × 10 = 700
=> The mean marks of 15 women = 60
=> Total marks of 15 women = 60 × 15 = 900
marks of 15 women = 60 × 15 = 900∴ Sum of the total marks of 25 people = 700 + 900 = 1600
marks of 15 women = 60 × 15 = 900∴ Sum of the total marks of 25 people = 700 + 900 = 1600 ∴ The mean marks of all the 25 people = 1600/25 = 64
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