Question

How many postcards can be buy in Rs.60 if the price of 30 postcards is Rs.45?​

Answer 1

$\bf\huge\underline{\underline{ Given :- }}$

• cost of 30 postcards is 45 Rs

$\bf\huge\underline{\underline{ To \: Find:- }}$

• number of postcards at 60 Rs

$\bf\huge\underline{\underline{ Answer :- }}$

• For 45 rs , 30 postcards

• For 60 rs , x postcards

• $\sf \: x = \frac{30 \times 60}{45}$
• $\sf \: x \: = 40$

$\rule{10cm}{0.05cm}$

ie , 40 postcards can be bought

Answer 2

Given:

    The price of 30 postcards is Rs.45

To Find:

   The number of postcards can be bought in Rs.60

Step-by-Step Explanation:

If the price of 30 postcards is Rs.45, then the price of 1 postcard is

   $= \frac{45}{30}$

   $= \frac{3}{2}$

   = Rs.1.5

So, number of postcards that can be bought in Rs.60 is equals to 60 divided by the price of one postcard.

$= \frac{60\times 2}{3}$ or  $= \frac{60}{1.5}$

$= \frac{120}{3}$

= 40

Answer is 40 postcards.

Hence, the number of postcards that can be bought in Rs.60 is 40, if the price of 30 postcards is Rs.45.