A group of students bid $3000 for a stall at the lunar new year fair. They bought 1000 dolls from a wholesaler for $12000 and planned to sell for $20 each at the stall.
(a) (i) What was their start-up cost ?
(ii) If all the dolls were sold , find the percentage pofit.
(b) It is known that 120 dolls remained unsold at 2 a.m. on the last day.
(i) What was the pencentage pofit or loss at that time?
(ii) If these 120 dolls were fially sold for $ 10 each , find the overall percentage profit or loss .
中一英文數學題！急
2011-01-24 4:40 am
回答 (1)
2011-01-24 5:33 am
✔ 最佳答案
ai)Start-up cost=3000+12000=$15000
ii)
If all the dolls were sold, the sales=20*1000=$20000
Percentage profit
=[(sales-cost)/cost]*100%
=[(20000-15000)/15000]*100%
=33.3% (corr. to 3 sig. fig.)
bi)
Total number of dolls sold=1000-120=$880
Total sales=880*20=$17600
Percentage profit
=[(17600-15000)/15000]*100%
=17.3% (corr. to 3 sig. fig.)
ii)
If these 120 dolls were fially sold for $ 10 each,
the overall sales=17600+120*10=18800
Hence, overall percentage profit (since sales>cost)
=[(18800-15000)/15000]*100%
=25.3% (corr. to 3 sig. fig.)
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