Question

The weight of 110 books is 12 kg .
a) Find the weight of 540 books .
b) How many books would weigh 5 kg?​

Answer 1

Answer:

a. 4950kg

*hope it's helpful for you*

Answer 2

We have the given data as

weight of 110 =12kg

first find the weight of 1 book = x

by applying cross multiplication method

$110 =12\\1 = x\\110x=12\\so \\x=\frac{12}{110} \\x=0.109$

x= weight of 1 book

x=0.109kg

a) weight of 540 books =

    $540\times 0.109\\=58.86kg$

b)how many books would weight 5kg

   let y= number of books for weight 5kg

    1=0.109kg

    y= 5kg

solving by cross multiplication we get

  $0.109y =5\\\\y = \frac{5}{0.109} \\y = 45.87$

hence a) 58.86kg

           b) 45.87 approximately 46 boos