Answer:
18r
Step-by-step explanation:
Multiply 9 by 2
You do 244 divide by sixty and your answer is 4.06
If they sold 89 calendars over 4 weeks, the 'equation' would look like (x = average calendars sold over 4 weeks):

If you solve it, you get:

Which is equal to
22.25. Hope this helps!
Answer:

Step-by-step explanation:

Four children average is 15.25 so ages must add to 61
61-12-16=33
11 and 22 go into 33
Youngest is 11