Percentage

Vedic Maths trick to Find Percentage.

In a mock test '57% ' students passed in numerical ability and '22%' in reasoning while '25%' failed in both if '294' students passed in both the subjects then find the total numbers of students who appeared for the mock test .

Failed in both = 25%

Passed in one or both subjects = 100 - 25 = 75%

Let x % students are passed in both subjects


Numerical
57%
57- x
x
22%
Reasoning
22- x



STEP 1 :

(57 - x) + x + (22 - x) = 75

79 - x = 75

x = 4 %

STEP 2 :

4% of T = 294       (where T = total number of student)

4 / 100 * T = 294

T = 294 * 100 / 4

T = 7350

So 7350 students are appeared for the mock test.