Question

the weight of of 80 copies of a book is 400 kg what is the the weight of 90 copies of such books

Please answer this question​

Answer 1

Answer:

80 copies =400kg I. e 80*5=400

then 90 copies=90*5=450kg

Answer 2

Answer:

Hey mate,

here is your answer

Solution:-

▪Weight of 80 copies=400kg

therefore weight of 1 copy=400/80=5kg

▪Weight of 90 copies=Weight of 1 copy×90 =5×90=450kg

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