Question

the average weight of Shivam Arya and Ananya is 45 kg if the average weight of Shivam and Arya is 40 kg and the average weight of Arya and Ananya is 43 kg then find the weight of Arya​

Answer 1

Answer:Hey mate here's your answer.....

let the weight of arya be x

let the weight of shivam be y

let the weight of ananya be z

Step-by-step explanation:

therefore (x+y)/2=40

=>x+y=80

=>x=80-y     (1)

Now,(x+z)/2=43

=>x+z=86

=>80-y+z=86 (from 1)

=>z=6+y   (2)

Again,(x+y+z)/3=45

=>x+y+z=135

=>80-y+y+6+y=135  (from 1 and 2)

=>86+y=135

=>y=49 kg

Now we know that x+y=80 (from above calculations)

=>x+49=80

=>x=31 kg

Therefore the weight of arya = 31 kg

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