The average weight of 5 students in a class is 25.8 kg. when a new student joined them, the average weight is increased by 3.9 kg. then find the approximate weight of the new student. (a) 55 kg (b) 49 kg (c) 42 kg (d) 44 kg (e) 58 kg
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❤❤❤hay.....❤❤❤
✔✔✔✔✔✔✔✔
plzzz.. mark it as a brainlist
⚓⚓⚓⚓⚓⚓⚓⚓⚓⚓
we know that....
sum = average × total no of element
it may be helpful for you
✅✅✅✅✅✅✅✅✅✅
now....
according to the question
sum of weight of 5 student
=5 ×(25.8)
= 129 kkg
now....
after new student ...
sum of weight
= 6 × (25.8 + 3.9)
= 6× 29.7
=178.2 kg
now weight of new boy
= 178.2 - 129
= 49.2 kgam
answer of the question
➖➖➖➖➖➖➖➖➖
✔✔✔✔✔✔✔✔
plzzz.. mark it as a brainlist
⚓⚓⚓⚓⚓⚓⚓⚓⚓⚓
we know that....
sum = average × total no of element
it may be helpful for you
✅✅✅✅✅✅✅✅✅✅
now....
according to the question
sum of weight of 5 student
=5 ×(25.8)
= 129 kkg
now....
after new student ...
sum of weight
= 6 × (25.8 + 3.9)
= 6× 29.7
=178.2 kg
now weight of new boy
= 178.2 - 129
= 49.2 kgam
answer of the question
➖➖➖➖➖➖➖➖➖
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