To know which number is between 0.5 and 8/9, let us convert all numbers in the same form, the decimal form. 8/9 is equivalent to 0.89.
Option A is 0.29. Option B is 0.14. Option C is 0.21 and option D is 0.29. From the given choices above, THERE IS NO CORRECT ANSWER. None of the choices given fits to be a number that is between 0.50 and 8/9. Hence, the given choices may be incorrect.
Answer:

Step-by-step explanation:
The number of red marbles in the bag is;
.
The number of blue marbles in the bag is;
.
The number of white marbles in the bag is;
.
The total number of marbles in the bag is:
.
The probability of selecting a blue marble is 
We substitute the given information to obtain:

We simplify to obtain:

500+600+900+400+600= 3000
Answer:
Step-by-step explanation:
580 - 58 (10% of 580) = 522
522 - discount price (20) = 502
Sally is paying 502 for her camcorder
990 - 247.5 (25% of 990) = 742.5
742.5 - 20 = 722.5
Sally is paying $502
Tabitha is paying $722.5