Question 1078046

let's the price of last year be {{{x}}}

if the price of a computer fell {{{20}}}%={{{20/100=0.20}}} this year, and if the computer now cost ${{{750}}}, than

 {{{x-0.20x=750}}}
 {{{0.8x=750}}}
{{{x=750/0.80}}}
{{{x=75000/80}}}
{{{x=937.5}}}

so, last year  it cost {{{937.5}}}