Question

(a) Weight of 4 students is 60, 62, 77, 79 kg. Their mode will be

3)50kg
60 किग्रा
(20624g
02 किग्रा
(3)79 kg
79 किया
( (4) None of the above
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Answer 1

Answer:

3

Step-by-step explanation:

79 kg

Mode is the highest Frequency of a given observation.

Answer 2

Answer:

ANSWER

Let x be the number of boys, then the number of girls will be (60−x).

The mean weight of boys is 50 kg, then the total weight of boys will be, 50x.

The mean weight of girls is 30 kg, then the total weight of girls will be 30(60−x)=1800−30x.

The mean weight of 60 students is 40 kg, so

totalno.ofstudents

weightofgirls+weightofboys

=40

60

1800−30x+50x

=40

x=

20

600

x=30

So, the number of boys is 30 and the number of girls is (60−30)=30.

Step-by-step explanation:

i hope this solution help you.