The sales was increased by 44.4%.
Step-by-step explanation:
- Lets do this cumulative
- 90 of 10 % = 9 which is 99
- 90 of 10 % = 9 which is 108
- 90 of 10% = 9 which is 117
- 90 of 10% = 9 which is 126
- 90 of 4 % = 3.6 which is 129.6
- 90 of 0.044% = 0.0396 which is 129.99
- This comes to nearly 44.44 to be closer there was an increase.
- Always rule 1 approximation use 50% of 90 if it is above 130.
- Down it to 40% of 90 see if the sales is lower than 130.
- It should always start with 50,40,30....10 percents.
- Alternative should be 10,1 or decimals.
- Approximation using decimals rounding up becomes simple.
Let the original price be p.
Then the sale price was (1.00-0.18)p, or 0.82p.
Emerson must pay tax on this sale price. It is 0.08(0.82p) = 0.0656p.
Thus, the final cost of the game was 0.82p + 0.0656p = 0.886p.
25 x 13 = 325
20x 8 = 160
325-160 = 165 square feet
answer is A
