Question

The value of a professional basketball player's autograph rose 30% in the last year. It is now worth $286.00. What was it worth a year ago?

Answer 1

Answer:

$220

Step-by-step explanation:

Let one year ago, worth of a professional basketball player's autograph=x

After  increasing    worth by 30%

Now, worth of  a professional basketball player's autograph=$286

We have to find the worth of   a professional basketball player's autograph a year ago.

30% of x=$\frac{30}{100}\time x=\frac{30x}{100}$

According to question

$x+\frac{30x}{100}=286$

$\frac{100x+30x}{100}=286$

$\frac{130x}{100}=286$

$x=\frac{286\times 100}{130}$

$x=220$

Hence, a year ago the worth of  a professional basketball player's autograph=$220

Answer 2

X+0.30x=286
Solve for x
X=220