Katie made some chocolate truffles. she gave 1/4 of her truffles to leanne, and then gave 1/2 of remaining truffles to jeff. at that point, katie had 18 truffles left

48

Step-by-step explanation:

Let the total number of truffles be represented by y

Leanne collected 1/4 of the truffles, hence remaining truffle is

1 - 1/4 = 3/4

Jeff collected 1/2 of remaining truffles implying that Jeff collected

3/4 x 1/2 = 3/8 of the truffles

the remaining truffle is

3/4 - 3/8 = 3/8

since truffles left are 18

(3/8)*y = 18

y = 18 x 8 / 3

y = 48

hence total number of chocolate truffles is 48