1. The cost of 10 dozens of eggs is $60. If half of the eggs were sold at a profit of 50%, and the rest were sold at a profit of 30%. Find the profit for selling all the eggs.
2. If a TV game is sold at $360, the loss percent is 20%.
a) Find the cost of each TV game.
b) If we want a profit of 40%, what will be the selling price?
Steps please~
profit and loss
2006-12-02 1:15 am
回答 (3)
2006-12-02 1:35 am
✔ 最佳答案
1.profit for selling all the eggs=$60/2x(1+50%)+$60/2x(1+30%) - $60
=$30x1.5+$30x1.3 -$60
=$45+$39-$60
=$24
===
2a.Cost of TV
=$360/(1-20%)
=$360/0.8
=$450
===
b.sell at a profit of 40%
=$450x(1+40%)
=$450x1.4
=$630
===
2006-12-02 2:12 am
1.Profit for selling all the eggs:
=$60/2x(1+50%)+$60/2x(1+30%) - $60
=$30x1.5+$30x1.3 -$60
=$45+$39-$60
=$24
2a.Cost of TV game:
=$360/(1-20%)
=$360/0.8
=$450
b.The selling price:
=$450x(1+40%)
=$450x1.4
=$630
=$60/2x(1+50%)+$60/2x(1+30%) - $60
=$30x1.5+$30x1.3 -$60
=$45+$39-$60
=$24
2a.Cost of TV game:
=$360/(1-20%)
=$360/0.8
=$450
b.The selling price:
=$450x(1+40%)
=$450x1.4
=$630
2006-12-02 1:25 am
1.cost for half of the eggs=$30
profit made by half of the eggs with profit of 50%=$30(50%)
=$15
profit made by half of the eggs with profit of 30%=$30(30%)
=$9
therefore the total profit made of selling eggs is $15+$9=$24
2(a).let x be the cost of the TV game,
x(1-20%)=360
x=$450
2(b). the profit we want to made=$450X40%
=$180
therefore the selling = $450+$180
= $630
profit made by half of the eggs with profit of 50%=$30(50%)
=$15
profit made by half of the eggs with profit of 30%=$30(30%)
=$9
therefore the total profit made of selling eggs is $15+$9=$24
2(a).let x be the cost of the TV game,
x(1-20%)=360
x=$450
2(b). the profit we want to made=$450X40%
=$180
therefore the selling = $450+$180
= $630
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