Answer:
Number of jars filled is 3 [tex]\frac{8}{9}[/tex] (approximately 4).
Step-by-step explanation:
Initial amount of salt = 1/2 cup.
Amount of salt left = 1/9 cup.
Amount of salt used = 1/2 - 1/9
= [tex]\frac{9-2}{18}[/tex]
= 7/18
The size of each jar = 1/10 cup.
Amount of salt used = size of the each jar x number of jars filled
7/18 = 1/10 x number of jars filled
number of jars filled = 7/18 ÷ 1/10
= 7/18 x 10/1
= 70/18
= 3 [tex]\frac{8}{9}[/tex]
= 3.9
The number of jars filled is approximately 4.