Question

find the total number of students in 20%of them are girls which is 1220 in school ​

Answer 1

Answer:

let x be total no. of students

20%of x=1220

20%×5 of x=1220×5

100%of x=6100

so total students in class will be 6100

Answer 2

20% of 1220 is 244

how did i get the answer?

Step 1: Our output value is 20.

Step 2: We represent the unknown value with x

Step 3: From step 1 above, 1220 = 100%

Step 4: Similarly, x = 20%

Step 5: This results in a pair of simple equations:

Percentage solution with steps:

20=100% (1)

x=1220% (2)

Step 6: By dividing equation 1 by equation 2 and noting that both the RHS (right hand side) of both

equations have the same unit (%); we have

20/x = 100%/1220%

Step 7: Again, the reciprocal of both sides gives

x/20= 1220/100

x=224

Therefore, 1220% of 20 is 244