Question

please any one can tell me the consept of ratio and proportion​

Answer 1

Well to find X of three values we either use unitary method or ratio and proportion. Ratio and proportion can be easier for people as well as hard. Like suppose- if a farmer sells 4 kg wheat for 300 rupees how much will he sell 5 kg wheat for?

here you can use unitary method too but I feel ratio and proportion is easier

so as per the first step we write here:

let the other number be X

therefore, 4 : 300 :: 5 : X

Now multiply the middle terms which are- 300×5

then multiply 4 into X

now divide 4 by 300 × 5 to find X

basically it's all the game of reciprocal

so,

= 300×5/4

= 150×5/2

= 75×5

= 375

the farmer sold 5 kg wheat for rupees 375

hopefully it helps you!