Question

please help in ques 6 from the photo below
 

Answer 1

Weight of 57 books = 11kg 400 gm = 11400gm
Weight of 1 book = 11400/57 = 200 gm
Weight of 71 books = 200* 71 = 14200 gm

Converting to kilograms,
Weight of 71 such books = 14kg 200 gm

Answer 2

11 kg 400gms=11400gms
weight of 57 books=11400gms
weight of 1 book=(11400÷57) gms
weight of 71 books=[(11400÷57)X71]gms=14200gms=14 kg 200gms...
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