brcurtis brcurtis
  • 02-03-2018
  • Mathematics
contestada

A CD which usually sells for $15.78 has a 15% discount. Estimate the amount of the discount.

Respuesta :

jdoe0001 jdoe0001
  • 02-03-2018
if we take 15.78 to be the 100%, what is the 15%?

[tex]\bf \begin{array}{ccll} amount&\%\\ \text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\ 15.78&100\\ a&15 \end{array}\implies \cfrac{15.78}{a}=\cfrac{100}{15}\implies \cfrac{15.78\cdot 15}{100}=a[/tex]
Answer Link
clarissahaney94
clarissahaney94 clarissahaney94
  • 30-08-2018

You need to round 15.78 to get 16. You then multiply 16 to 15 and divide by 100 to get your answer :

2.4

Which would also be $2.40

Answer Link

Otras preguntas

Can someone help me please
Let f = {(7,2),(8,0),(0, -3)}. Find f(0).
A visit to the hospital 300 word​
I WILL GIVE BRAINLIEST!Assignment: Give a detailed response to this prompt. Write MORE THAN 5 sentences.PROMPT: Your friend, Susannah, manages a sandwich shop.
does Force and Mass determine the acceleration of an object.
Algebra Explain how to use mental math to find the unknown Number in the equation 12 xb= 480.Solve
4. (-5, 2) and (-5, 6)
2 3−2⋅3+5 ñññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññ
(Write an equivalent expression by applying the distributive property X+2)(x+9)
the three steps in memory information processing are