Write the percent as a simplified fraction. In 1991 unemployment in a certain city had spiraled to 13 thousand, making the unemployment figure jump by 350%.
A) $3 \frac { 1 } { 20 }$
B) $\frac { 13 } { 100 }$
C) $3 \frac { 1 } { 2 }$
D) $\frac { 1 } { 2 }$
E) $\frac { 7 } { 20 }$

Question

Quizplus · Accepted Answer

A 350% increase means that the unemployment figure became 350% greater than its original amount. Let x be the original amount of unemployment. Then, the new amount is 4.5x (since 350% of x is 3.5x, and adding that to x gives 4.5x). Therefore, the percent increase is (4.5x - x)/x = 3.5 or 350%. However, the question is asking for the percent itself, which is 350/100 = 7/2 or 3.5 as a simplified fraction. Choice C expresses this as a mixed number, 3 1/2, which is equivalent to 7/2.

Write the Percent as a Simplified Fraction 31203 \frac { 1 } { 20 }3201​

Write the Percent as a Simplified Fraction $3 \frac { 1 } { 20 }$