Question

A pupil got 20 marks out of 25, express if in the form of percentage ​

Answer 1

Answer:

Step-by-step explanation:

f two parameters are directly proportion then start solving as follows :

20 25

X 35

Now cross multiply and equate as follow

X *25 = 20 * 35 => X = 28

Now suppose we had two parameters inversely proportional to each other, then multiply horizontally as follows :

1ST parameter 2nd Parameter

A B

C D

We have following relationship. .

A*B = C * D

So if we are given any three values, we can calculate fourth one. e.g

No. Of workers and no of days are inversely proportional to each other

So we can use above formula to solve such problems.