Sonia works in quality control at a factory that makes car radios. One week she found 18 defective radios. This represents 0.8% of the number of radios produced. How many radios did the Factory produce that week

2250 radios

Step-by-step explanation:

In this question the basis for analysis is in weeks

in one week sonia found 18 radios to be defective out of the total (y) produced that week and it represents 0.8%

∴ let the total number of radios produced that week = y radios

percentage of defective radios × total = number of defective radios

this means that the algebraic representation of the data given is

× y = 18

y=

y=2250

∴2250 radios were produced that week

$25

step-by-step explanation:

25 - 4.50 = 20.5

20.5 / 2 = 10.25

10.25 + 10 = 20.25

20.25 - 12.50 = 7.75

therefore the answer is $25 as shown as the first number.