Victor sells roadside cashews for $12 per pound.
Today, the price is discounted by 25%. The discount is
25% of $12 = 25/100*$12 = $3
Thus the discounted price is $12 - $3 = $9 per pound
Carla buys 2 3/4 pounds of roasted cashews at that discounted price, thus she will pay:
$9 * 2 3/4
Expressing 2 3/4 as a single fraction:
2 3/4 = 2 + 3/4 = (8+3)/4 = 11/4
Carla will pay:
$9 * 11/4 = $24.75
Carla will pay $24.75