Question

Price of one kg apple is 90 if the price decreases in the ratio of 10:7 . what is the decreased price answer with full explanation .

Answer 1

Answer:

If cost of 20 Apples = 185

Then, cost of 1 Apple = 185/20

So, cost of 7 Apple = 185/20 × 7.

= 37/4 ×7

= 64.75 Rupees

Unitary method is very imple it has simply maths behind it…

Don't go through the numeric figures of this question…let me explain you with example

e.g. suppose you have 10 chocolate for Rs 20

Then what is the cost of 1 chocolate i.e. Rs 2 per chocolate

So you have a formula

Cost of one item = total cost/ number of items

If cost of 1 chocolate is Rs 2 then what is the cost of 7 chocolate…. simple Rs 2 X 7 chocolate = Rs 14

So apply the same math with above problem…

It is simply based on formula or you can say simple logic