## HorseCrazyGirlForever 2 years ago A warehouse club allows non members to shop, but charges them a 10% mark up on all items purchased. If a computer costs \$549.99 for members, what is the non member price?

1. Didgeridoo

Ok, I'd start by changing 549.99 to 550\$ A tad easier that way

2. HorseCrazyGirlForever

ok

3. Didgeridoo

Ok, so the problem states that 550\$ is the normal price, for members. If nonmembers are charged 10% more, that means they pay 110% total. Do you understand why?

4. HorseCrazyGirlForever

no

5. Didgeridoo

Alright, let me try a different tactic then...

6. Didgeridoo

First, multiply the member price, 550\$ by 10%

7. HorseCrazyGirlForever

5500

8. Didgeridoo

Did you hit percent?

9. Didgeridoo

10% is not the same as 10

10. HorseCrazyGirlForever

Oh.

11. HorseCrazyGirlForever

550

12. Didgeridoo

Drop one more zero. 55

13. HorseCrazyGirlForever

How would I get that on a calculator?

14. Didgeridoo

Do you have a percent button? If not, you can also use .10 for 10%

15. Didgeridoo

that's 0.10 Not ten

16. HorseCrazyGirlForever

No. I will try using the decimal. I got 55

17. Didgeridoo

Ok, excellent! 55 is 10% of 550. So, if you add 55 to the original price of 550, you get the 10% markup, your final answer. Try that, I'll be back in a minute

18. HorseCrazyGirlForever

Ok!

19. HorseCrazyGirlForever

\$605

20. Didgeridoo

You got it :)

21. HorseCrazyGirlForever

Pure awesomeness! The next question was should a member join the club prior to purchasing the computer if the fee is \$40. I said yes.

22. Didgeridoo

That's right as well

23. HorseCrazyGirlForever

:)

24. Didgeridoo

Do you understand why .10 is equal to 10%?

25. HorseCrazyGirlForever

To cover his expenses, Denny marks the price of each item 30% more than his purchase price. What does Denny charge for items that cost him \$1.04, \$7.23, \$9.99 and \$42.77?

26. Didgeridoo

Ok, before I give you a hint, try to get the first. 1.04\$

27. HorseCrazyGirlForever

What do you mean?

28. Didgeridoo

Each item is marked up 30%, so there are four answers here

29. Didgeridoo

Remember on the last problem, you multiplied the original price by .1, for 30%, what would you use?

30. HorseCrazyGirlForever

Division?

31. HorseCrazyGirlForever

\$3.33 is that the answer?

32. Didgeridoo

Hmm, let me see if I can teach you a short way to do this. So you remember in the last problem, you used .10 for 10%?

33. HorseCrazyGirlForever

Yeah.

34. Didgeridoo

You need to use 30% in this, so what decimal would you use?

35. HorseCrazyGirlForever

.30

36. Didgeridoo

Good. Now he's a little trick. 50% is .50, 85% is .85, and 100% is actually 1

37. HorseCrazyGirlForever

Ok!

38. Didgeridoo

If you add your markup decimal (.30) to 1, you get 1.3 Right?

39. HorseCrazyGirlForever

Where did the one come from?

40. Didgeridoo

Because the original price is 100% of itself, it's a bit complicated. Point is, if you take that 1.3 and multiply it by each of those prices, you get the correct answer

41. Didgeridoo

\$1.04, \$7.23, \$9.99 and \$42.77 Multiply each by 1.3 on your calculator

42. HorseCrazyGirlForever

oh ok!

43. HorseCrazyGirlForever

1.34 9.40 12.99 55.60

44. Didgeridoo

Perfect!

45. Didgeridoo

Now let me go back and show you something

46. Didgeridoo

A warehouse club allows non members to shop, but charges them a 10% mark up on all items purchased. If a computer costs \$549.99 for members, what is the non member price?

47. Didgeridoo

You have a 10% Markup here, so take that .10, and add it to 1, like we did just now

48. HorseCrazyGirlForever

1.1

49. Didgeridoo

Right, now multiply that by 550. Seem familiar? :)

50. HorseCrazyGirlForever

When Denny has a sale he marks the price 15% more than his purchase price. What is the price of each the above items?

51. HorseCrazyGirlForever

605

52. Didgeridoo

Yep, that trick works for every price mark up problem!

53. HorseCrazyGirlForever

54. Didgeridoo

Sure, what do you need? Although I need to go kinda soon

55. HorseCrazyGirlForever

Ok I just need help with like the first two of this problem.When Denny has a sale he marks the price 15% more than his purchase price. What is the price of each the above items?

56. Didgeridoo

Same prices as before? \$1.04, \$7.23, \$9.99 and \$42.77?

57. HorseCrazyGirlForever

Yes.

58. Didgeridoo

Ok, same trick as before 15% = .15 .15+1=1.15 1.15 x 1.04\$ = 1.19 \$ 1.15 x 7.23\$ = 8.31\$ 1.15 x 9.99\$ = 11.49\$ 1.15 x 42.77\$ = 49.19\$

59. HorseCrazyGirlForever

You have helped me so much! Thank you so much!

60. Didgeridoo

You are very welcome. Good luck with your studies!