Use the diagram to answer each of the following questions.
a) Given that c = 54 and d=48, find k.
b) Given a=52 and k=22, find d.
c) Given c=25 and k=18, find a.
d) Given a=361 and k=5, find c.
e) Given k=15, find w.
f) Given w=19, find k.

The value of k is 11.1%

The value of d is 65.82

The value of a is 16.81

The value of c is 398

The value of w is 0.7225

The value of k is

Percentage can be described as a fraction of a number that is expressed as a number out of hundred. The sign used to represent percentages is %.  

The formula that can be used to determine the value of k is: [(d/c) - 1] x 100

[(48 / 54) - 1] x 100 = 11.1%

The formula that can be used to determine the value of d is: a / (1 - k)

52 / (1 - 0.22)

52 / 0.79 = 65.82

The value of d = (1 - 0.18) x 25 = 20.50

The value of a =  (1 - 0.18) x 20.50 = 16.81

The value of d = 1.05 x 361 = 379.05

The value of c = 1.05 x 379.05 = 398

(1 - 0.15) x (1-0.15)

0.85 x 0.85 = 0.7225

k = 1 - √0.19 = 56.4%

To learn more about percentages, please check: link

x/7.50 = 15

x= 7.50 / 15 divide

step-by-step explanation: