The manager of a newsagency conducted a survey to find out the most popular newspaper. he found that the sales ratio of the ‘daily news’ paper to ‘wacky news’ paper was 2 : 5 and the ratio of ‘wacky news’ to ‘truthful news’ sold was 4: 1.
(a) if 25 ‘truthful news’ papers were sold on friday, how many of ‘wacky news’ were sold?
(b) using your answer to (a) find how many ‘daily news’ papers were sold on the same day?

a) The  number of ‘Wacky News’  sold on Friday = 100

b) The number of Daily News sold on Friday = 40

Step-by-step explanation:

The ratio of         Daily News  :  Wacky News = 2   :    5

and the ratio of Wacky News : Truthful News  = 4   :  1

a) The number of 'Truthful News' papers sold on Friday  = 25

W  / T  = 4 / 1  ⇒ W = 4 T

Comparing both ratio of W, we get

Also, T =  25

So, W =  4T  =  4 x 25  = 100

Hence, the ‘Wacky News’  sold on Friday = 100

b) Now,  D / W  = 2 / 5  

and W  = 100

⇒

or, Now,

or, 'Daily News' sold on Friday = 40

Hence, the number of Daily News sold on Friday = 40

5.25 ounces

step-by-step explanation:

divided 3/4 and 6