Question

the weight of 65 books is 13 kg. (1) what is the weight of 80 such books. (2) how many such books weight 6.4. kg

Answer 1

1. 13÷65 =1/5
1/5×80 =16
2. 6.4 =1/5 × x
6.4×5= x
31 kg =x

Answer 2

Answer:

Heyaa :)

Here's the answer which you are looking for.

Weight of 65 books =13 kg

Weight of one book =1/5 kg.

Weight of 80 such books = 80*1/5=16 kg.

Step-by-step explanation:

2. 32 books weight 6.4kg

Step-by-step explanation:

Given :the weight of 65 books is 13kg

To Find :  how many such books weight 6.4kg

Solution:

Number of books weighing 13 kg = 65

Number of books weighing 1 kg =

Number of books weighing 6.4 kg =

Hence 32 books weight 6.4kg