The average weight of 100 people in a
group is 46 kg while that of men and
women separately is 50 kg and 40 kg
respectively. Find the number of men in the
group.
a. 40
b. 50
C. 60
d. 70
Answers
Answered by
5
Step-by-step explanation:
let the number of men in the group be x.
therefore , number of women equal to 100-x
NOW , the average weight of hundred people equal to 46 kg.
total weight of 100 people equal to 46× 100 = 4600kg.
average weight of men = 50kg.
total weight of men = 50x kg.
average weight of women = 40kg
total weight of women = 40 ( 100-x )
= 4000 - 40x.
A/Q,
= 4000 - 40x + 50x = 4600
= 10x = 600
= x = 600/ 10
= 60 men.
Answered by
2
Answer:
40
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