**Answer:**

**Monthly sales = $15000**

**Step-by-step explanation:**

**Let x be the monthly sale.**

Given:

**The monthly salary of a show room attendant is the sum of a fixed salary of $600 plus 8% of all monthly sales.**

8% of monthly sale =

**8% of monthly sale = **

**So, the monthly salary of attendant is.**

Monthly salary is given.

**Therefore, the monthly sale is $15000**

**Answer:**

Job A, will take 24 hours and Job B, will take 30 hours

**Step-by-step explanation:**

12 X 30 = 360 and 15 X 24 = 360

**Answer:**

Yes.

**Step-by-step explanation:**

1+1=2

3+5=8

7+1=8

9+23=32

5+13=18

An odd number is an even number plus 1, and 1 plus 1 is an even number. even numbers added together are also always even numbers, so two even numbers (in the second example it'd be 2+1 & 4+1, so 2 and 4) plus an even number(1+1=2) must be an even number.

8 of out of the 12 marbles are red. The fraction is 8/12 or 67% of the marbles are red.