The average television prime-time advertising unit of 30

AAPL wrote:Princeton Review

The average television prime-time advertising unit 30 seconds cost $30,000 in 1973 and $50,000 in 1977. What was the approximate percent increase in the cost of a unit?

A. 20%
B. 33%
C. 40%
D. 60%
E. 67%

OA E

The approximate percent increase in the cost of a unit = [(50,000 – 30,000) / 30,000]*100% = 66.67% = ~67%

The correct answer: E

Hope this helps!

-Jay
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AAPL wrote:Princeton Review

The average television prime-time advertising unit 30 seconds cost $30,000 in 1973 and $50,000 in 1977. What was the approximate percent increase in the cost of a unit?

A. 20%
B. 33%
C. 40%
D. 60%
E. 67%

OA E

We can also quickly solve this question by testing the answer choices....

Start with C (40%)
40% of $30,000 = $12,000
So, a 40% increase (from 1973 to 1977) = $30,000 + $12000 = $42,000
No good. We need to new amount to be $50,000
ELIMINATE C
Since $42,000 is less than $50,000, we need a BIGGER percent increase.
So, we can also ELIMINATE A and B

Now try either D or E

Let's try D (60%)
60% of $30,000 = $18,000
So, a 60% increase (from 1973 to 1977) = $30,000 + $18000 = $48,000
No good. We need to new amount to be $50,000
ELIMINATE D

By the process of elimination , the correct answer must be E

Cheers,
Brent