First of all, we know that Lenny gets one-fifth commission on any piece of jewlery that he sells to a custumor which means that he will get 1/5 of the money that he sells any pieces of jewelry to the costumer.
Next, he sold a $1432.25 necklace today, so he will get:
$1432.25×1/5=$286.45 as commission. As a result, his commission is $286.45. Hope it help!
