Math, asked by neerajbansal891, 11 months ago

the mean weight of 60 students In a class is 40 kg .the mean weight of boys is 50 kilogram while that of girls is 30 kg .find the number of boys and girls in the class​

Answers

Answered by madhutiwari793
2

Answer:

30 boys and 30 girls

Step-by-step explanation:

mean weight of 1boy = 50kg

mean weight of one girl= 30kg

mean weight of 1 boy and 1 girl =50+30/2 = 40kg =mean weight of whole class

so girls and boys are in same ratio

let no. of boys be X then no. of girls =X

x+X=60

x=30

so there are 30 boys and 30 girls

please mark BRAINIEST

Answered by anupriyasuresh48
0

Answer:

boys =30 and girls =30

Step-by-step explanation:

mean =60*40=2400

no. of boys weight +no of girls weight÷2

50+30÷2=40

therefore they are in the same ratio by this we can say :

boys =30 and Girls=30

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