10 points! pre algebra problems show work please?
4. The sales price of a car is $12,590, which is 20% off the original price. What is the original price?
A. $14,310.40
B. $14,990.90
C. $15,290.70
D. $15,737.50
E. $16,935.80
7. Alfred wants to invest $4,000 at 6% simple interest rate for 5 years. How much interest will he receive?
A. $240
B. $480
C. $720
D. $960
E. $1,200
8. Jim is able to sell a hand-carved statue for $670 which was a 35% profit over his cost. How much did the statue originally cost him?
A. $496.30
B. $512.40
C. $555.40
D. $574.90
E. $588.20
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Verified answer
D) (12590/80)*100 = 'D'
E) (4000*1.06)-4000 = 240. 240*5 = 'E'
A) (670/135)*100 = 'A'
100% certain!! :D
Hope I helped :-)
I don't want to give you the answers because I want you to do it and learn ! I will just give you the principles.
4. The original price is x, so the sale price is 0.8x (20% off). To go from 0.8x to x, you need to divide by 0.8 or multiply by 1.25 .
7. Simple interest at 6% per year for five years will give you a total interest of 30%. What is 30% (or 0.3) of 4000 ?
8. It cost him x and he is selling at 1.35x. If 1.35x = 670, what is x ?
7. Yossi gets a 20% decrease value on the bicycle keep because of the fact he works there. How plenty will he could pay for kit that oftentimes sells for $a hundred and fifty? answer a hundred and fifty*(eighty/one hundred) = $a hundred and twenty....Ans a. $a hundred and forty b. $a hundred thirty c. $a hundred and twenty ........Ans d. $a hundred and ten e. $one hundred 8. Martine gets an vehicle service bill charging her $350 for hard artwork and $a hundred and fifty for areas. what number of the full bill is for areas? Sol entire bill = 350+a hundred and fifty=$500 % of areas of entire bill =a hundred and fifty/500=30% ....ANs a. 30% ......Ans b. 15% c. a hundred and fifty% d. seventy 5% e. 40 5%