Question

if the cost of 18 chairs is rupees 22770.how many chairs can be baught for rupees 10120

Answer 1

Hi, Friend, Harish here.

Here is your answer:

Cost of 18 chairs = 22770 

Cost of x chairs = 10120

So, We can use ratio and proportion method here.

18 : x  : : 22770 : 10120.

Here 18 & 10120 are called extremes & x , 22770 are called means

We know that,

Product of extremes =  Product of means

 18  ×  10120    =     x  ×  22770 

⇒  $x = \frac{18 \times 10120}{22770}$

⇒  $x = 8.$

Therefore 8 chairs can be bought with 10120 rupess.
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Hope my answer is helpful to you.