Answer:
d. 80:8:3
Step-by-step explanation:
The question
For each $ 200 spent by the research department, sales department spends $ 20.For every $ 400 spent by the sales department the advertising department spends $ 150. The triple ratio of the money spent by the research department to the money spent by the sales department to the money spent by the advertising department fan be expressed as 2:1:5 b. 20:4:1 c. 40:8:3 d. 80:8:3
Research department : Sales Deptt: Advert Deptt
$ 200 : $ 20
$4000 : $ 400 : $150
( multiplying 400 with 10 to get the research department proportion)
400 : 40 :15 (dividng by 10)
80 : 8 : 3 ( dividing by 5)
Here we see that the ratio between the research department and the sales department is 10 :1 ( 200: 20)
Keeping the same ratio for the proportion given 400: 150 the $ 400 is multiplied with 10 to get the proportion of the research department.
Then we obtain 4000: 400: 150 which is reduced first by dividing with 10 and then 5 .
