Answer:
$15.96
Step-by-step explanation:
Sales price = $19.95
Discount = 20%
Amount paid = $19.95 - ($19.95*20%) = $19.95 - $3.99 = $15.96
The diameter is a line that stretches across the middle of a circle from end to end. The radius is one half of this line, stretching from the center of the circle to a point on the side of the circle. This means that the diameter is 2 times the length of the radius. 2 times 2 is 4, meaning that the diameter is 4 inches.
Let the required no. be x then according to question
(84/100)*x = 21
x = 21*(100/84)
x = 2100/84
x = 25
hence the required no. is 25
hope it helped
