我有題數吾識做:
Brian sold a pair of sport shoes at a profit of 35%. Tt is known that he gained $350. How much did he buy the sport shoes for?
我想問系點計先對?
急!!!thanks a lot~!!!
F1 Maths Profit question.!!
2011-11-30 3:56 am
回答 (4)
2011-11-30 4:01 am
✔ 最佳答案
您好，我是 lop，高興能解答您的問題。He bought the sport shoes for :
350 ÷ 35% + 350
= 350 × 100/35 + 350
= $1350
Answer : He bought the sport shoes for $1350 .
2011-12-05 18:55:52 補充：
correction of 001 :
we should not plus 350 because the answer should be the cost price , so
He bought the sport shoes for :
350 ÷ 35%
= 350 × 100/35
= $1000
Answer : He bought the sport shoes for $1000 .
參考: Hope I Can Help You ^_^ ( From me )
2011-12-04 7:18 am
Let $n be the cost of Brian's sport shoes.
nx 35%=350
0.35n=350
n=350/0.35
n=1000
$1000 is the cost of Brian's sport shoes.
My presentation may be not good enough, so this is a reference only.
nx 35%=350
0.35n=350
n=350/0.35
n=1000
$1000 is the cost of Brian's sport shoes.
My presentation may be not good enough, so this is a reference only.
2011-11-30 10:40 pm
Please do it step by step
Let B be Brian spend originally on a pair of sport shoes
Selling Cost: B + 350
Brian's selling cost make a profit of 35%: B(1+35%)
B x (1+35%) = B + 350
1.35B = B + 350
1.35B - B = 350
0.35B = 350
B = 1000
Let B be Brian spend originally on a pair of sport shoes
Selling Cost: B + 350
Brian's selling cost make a profit of 35%: B(1+35%)
B x (1+35%) = B + 350
1.35B = B + 350
1.35B - B = 350
0.35B = 350
B = 1000
2011-11-30 5:23 am
Should be this answer:
Profit = 35% = $350
So cost = 100% = $350/35% = $1000
So he bought the sport shoes for $1000.
Profit = 35% = $350
So cost = 100% = $350/35% = $1000
So he bought the sport shoes for $1000.
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