Julie wants to buy cartons of apple juice with $55. Each carton costs $3.75.
Let x be the number of cartons she can buy.
3.75x =< 55
Divide both sides by 3.75
3.75x / 3.75 =< 55/3.75
x =< 14.66666
Of course, she can't buy 14.666 cartons so we can the integer part only. Julie can buy 14 cartons of Juice.
Hope this helps! :D