Question

Please answer my question correctly​

Answer 1

Answer:

Step-by-step explanation:

Firstly, we know the formula for percentage which is  P = B x R

where Percentage is associated with of,

        Base  is associated with %  and

       Rate is associated with is

1.  We have, 30% × N=  12

=   30  x   N      =   12

   100  

Multiplying both sides by 100 and dividing both sides by 30,

we have  N = 12 ×  100        N  =  12  x   3.33    

                               30

N  = 40.

P = 12,   B = N and R = 30

2.  N is 30%  of 12000  =  30/100 x 12000   =  3600

P = N,   R = 30 ,  B = 12000

3.  26 is 40% of N.      =  26 X 100 / 40  =  65

P = 26 ,  R = 40,  B = N

4.  60 IS N% OF 80  =   N/100  x 80  = 60

                                       80n   = 60  

                                      100        1

cross multiply.   80n  = 6000   N = 75

P = 60,  R = N  ,  B = 80

5. 75% of N is 30  

N = 75 X100 / 30   =  75 X 3.33  N = 250

P= 30,  R = 75,  B = 30