Diana bought a car for $5000 and plans to sell it to make a 20% profit. What should she sell it for to make the profit she desires?

0.20*5000 = 1000

she needs to sell it for 5000+1000

therefore she needs to sell it for 6000$

You need to know 20% of $5000. "Of" means "times".

$5000 x 0.20 (which is 20% written as a decimal)

=$1000 profit she wants to make

$5000 (original price) + $1000 (profit) = $6000 (sale price)