Question

1. if the cost of a note book is rs 8 3/4, how many note books can be purchased for rs 131 1/4 ?
2. the cost of 5 2/5 kg of sugar is rs 101 1/4, find its cost per kg.
please solve these some
its really urgent
whose answer is best i will mark him/her brainliest

Answer 1

Answer :

1]

Given that, the cost of a notebook is

= Rs 8 3/4

= Rs 35/4

Also, Rs 131 1/4

= Rs 525/4

So, required notebooks to be bought

= (525/4)/(35/4)

= 15

So, 15 notebooks can be bought.

2]

Amount of sugar

= 5 2/5 kg

= 27/5 kg

and total cost

= Rs 101 1/4

= Rs 405/4

So, the cost of sugar per kg

= Rs (405/4)/(27/5)

= Rs {(405 × 5)/(4 × 27)}

= Rs 2025/108

= Rs 75/4

= Rs 18 3/4

Hope it helps!

Answer 2

$\bold{1 \: st \: sum:}$

changing mixed fractions into improper fraction :

8 3/4 = 35/4

131 1/4 = 525/4

Given :

1 book = 35/4

? = 525/4

$\dfrac{525}{4} \times \dfrac{4}{35} = 15$

Hence , 15 books can be purchased .

________________________________________

$\bold{2 \: nd \: sum:}$

Changing mixed fraction into improper fraction :

5 2/5 = 27/5

101 1/4 = 405/4

Given:

27/5 kg of sugar = 405/4

per kg =. ?

$\dfrac{405}{4} \times \dfrac{5}{27} = \dfrac{2025}{108} = \dfrac{75}{4} = 18 \dfrac{3}{4}$


Hence, per kg of sugar = 18 3/4.