- If a quarter Kg of potato costs 60 paise.
- The cost of 200 gm potatoes can be figure out in this way.
Explanation
Two given entities here are
- Potatoes
- Cost
To determine the relation here, let suppose; cost of 200 gm potatoes = y
Case
As we know that;
1 Kg = 1000 gm
1/4 Kg = 250 gm
Potatoes Cost
250 60
200 y
- More potatoes means more price.
- Small quantity of potatoes would require less price.
This clearly indicates that there is direct relation.
Direct/Indirect relation tells how the equation will be written.
250 : 200 :: 60 : y ________ (A)
After simplifying equation (A), we can easily figure out the value of y (y = 48 paise)
To Find
Cost of 200 gm potatoes = y
Solution
Method I
Let suppose
Cost of 200 gm potatoes = y
Potatoes Cost
250 60
200 y
Relation between mangoes and price is direct, so;
250 : 200 :: 60 : y
250 x y = 200 x 60
y = 12000/250
y = 48 paise
Cost of 200 gm potatoes = 48 paise answer
Method II
Cost of 250 gm potatoes = 60 paise
Cost of 1 gm potatoes = 60/250
Cost of 1 gm potatoes = 0.24 paise
Cost of 200 gm potatoes = 0.24 x 200
Cost of 200 gm potatoes = 48 paise
Cost of 200 gm potatoes = 48 paise answer
Conclusion
If a quarter Kg of potato costs 60 paise, the cost of 200 gm potatoes would be 48 paise.