Mrs. johnson is 3 times as old as her son. ten years ago she was 5 times as old as her son was then. find each of their ages

her son is 20, Mrs. Johnson is 60

Step-by-step explanation:

if her son is x, Mrs. Johnson is 3x,

Ten years ago,

her son is x-10, Mrs. Johnson is 3x-10,

so:

3x-10=5(x-10)

x=20

answer is c

step-by-step explanation:

to find the total number of combinations, multiply the quantity of each item by each other:

2 pairs of shoes x 3 pairs of shorts = 6 different combinations.