Answer:
Yes, the graph makes it appear as if sales increased three folds.
Step-by-step explanation:
The graph presented by the advertising company is misleading, as it attempts to exaggerate the effect of its advert on sales. This can be attributed to the scale which is isn't uniform.
Last year sale was about 137000 and it grew to 150000 as a result of advertisement.
But from the bar chart, it seems there was three times increase in sales.
Given:
Sum of ages of brother and sister = 15
Product of their ages = 54
To find:
How old is the older one between the two of them?
Solution:
Let x be the age of brother and y be the age of sister.
Sum of ages of brother and sister = 15
...(i)
Product of their ages = 54
[Using (i)]
Splitting the middle term, we get
Using zero product property, we get
If , then using (i), we get
If , then using (i), we get
Therefore, the age of older one is 9, the age of younger one is 6 and the difference between their ages is 3.