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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? ______________________________________________________________________ ______________________________________________________________________

Respuesta :

Answer:

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

⇒ [tex]D =\frac{2W}{5}[/tex]

or, Now, [tex]D   =\frac{2 \times 100}{5}  = 40[/tex]

or, 'Daily News' sold on Friday = 40

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

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