Question

the weight of 56 boxes 8 kg what is the weight of 152 such books ? how many such books weigh 6 kg?​

Answer 1

I guess that would be 56 books

then each of the book's weight would be 1/7

then the weight of 152 books would be 152/7 = 21.71kg

If the weight is 6 kg, there would be 3books

Answer 2

Unitary method

56 books= 8kg

1 book will weigh= 8/56 kgs

So 152 such books will weigh= 8/56 x 152

                                              =21.714 kgs

Now, we have been asked how many such books will weigh upto 5 kg....

If 8 kg weight is of 56 books

Then 1 kg will be the weight of 56/8 books

And 5 kg will be the weight of 56/8 x 5 books

i.e., 7x5= 35 books

Hence 35 books will weigh upto 5 kg