Mr. Trump buys 71 pencils. Each pencil costs 2 dollars, and 67 pens, each pen costs 3 dollars. He gets a discount of 1 dollar for 3 pencils he buys and a discount of 2 dollars for 5 pens he buys. How much in total does he pay?
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A box of erasers cost 4 dollars. A box of pencils cost 6 dollars more. Darwin spent 240 dollars on some boxes of erasers and pencils. The ratio of the number of pencil boxes to the number of eraser boxes was 4:5. How many boxes of pencils did he buy?
Hint: Supppose that Darwin bought x eraser boxes, then he bought \(\frac{4}{5}x\) pencil boxs. (\(x\in N,x>0\)
Because Darwin spent 240 dollars so we have equation:
\(4x+\left(4+6\right).\frac{4}{5}x=240\)
\(\Rightarrow12x=240\Rightarrow x=20\)
So Darwin bought 20 eraser boxes and 16 pencil boxes.
Have a good time :))
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Một hộp tẩy giá 4 USD. Một hộp bút chì có giá 6 đô la hơn. Darwin đã chi 240 đô la trên một số hộp tẩy và bút chì. Tỷ lệ số lượng các hộp bút chì để số lượng các hộp tẩy là 4: 5. ông đã mua bao nhiêu hộp bút chì?
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9. Alex is filling up his pencil case before school. He wants to bring one pen and one pencil. He has red, black or blue pens, and he has pencils decorated with stars, dogs, or pumpkins. Given these choices, how many different combinations of items could Alex put in his pencil case?
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he uses pencils to decord and paints too , i think that some a pen . He has 4
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Find and correct the mistakes in the following sentences:
1. A pair of compasses are used for draw circles.
2. He has just bought a pencil case to held his pens and pencils
3. A correction pen is used for cover writing mistakes
4. British women overtake British men in Internet usage since 2005
5. How did your life change over the past ten years
Find and correct the mistakes in the following sentences:
1. A pair of compasses are used for draw circles.
2. He has just bought a pencil case to held his pens and pencils
3. A correction pen is used for cover writing mistakes
4. British women overtake British men in Internet usage since 2005
5. How did your life change over the past ten years
Find and correct the mistakes in the following sentences:
1. A pair of compasses are->is used for draw circles.
2. He has just bought a pencil case to held->to hold his pens and pencils
3. A correction pen is used for cover->covering writing mistakes
4. British women overtake->have overtaken British men in Internet usage since 2005
5. How did your life change over the past ten years->ten years ago
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1. A pair of compasses are used for draw circles.
=> drawing
2. He has just bought a pencil case to held his pens and pencils
=> hold
3. A correction pen is used for cover writing mistakes
=> covering
4. British women overtake British men in Internet usage since 2005
=> have overtaken
5. How did your life change over the past ten years?
=> ten years ago
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In a promotional sale, anyone who buys a bottle of juice at the regular price of 7 dollars can get a second bottle of juice by paying 1 more dollar. A group has 9 people, each of them wants a bottle of juice. How many dollars does the group have to pay at least?
Find and correct the mistakes in the following sentences:
1. A pair of compasses are used for draw circles.
2. He has just bought a pencil case to held his pens and pencils
3. A correction pen is used for cover writing mistakes
4. British women overtake British men in Internet usage since 2005
5. How did your life change over the past ten years
HELP ME
In a promotional sale, anyone who buys a bottle of juice at the regular price of 7 dollars can get a second bottle of juice by paying 1 more dollar. A group has 9 people, each of them wants a bottle of juice. How many dollars does the group have to pay at least?
Giải nhanh nhất thì mình chọn,phải có cả cách làm
Câu này ở Toán Tiếng Anh violympic
Nghĩa của bài này là:Trong một bán quảng cáo, bất cứ ai mua một chai nước trái cây với giá thường xuyên là 7 đô la có thể có được một chai thứ hai của nước bằng cách trả 1 đô la hơn. Một nhóm có 9 người, mỗi người trong số họ muốn một chai nước trái cây. Hỏi nhóm phải trả ít nhất bao nhiêu tiền ?
Giải:
Nếu mua một chai nước với giá 7 đô la mà được tặng thêm 1 chai với giá 1 đô la thì chỉ cần 4 người mua đã có 8 chai,người thứ 9 sẽ mua thêm một chai với giá 7 đô la.Vậy số tiền họ cần phải trả là:(7+1).4+7=39(đô la)
Đáp số:39 đô la
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On a Christmas tree, there are 45 glass stars and 26 golden balls. Each glass star costs 4 dollars while a golden ball costs 3 more dollars than a glass star. What is the total cost of the glass stars and golden balls?
On a Christmas tree, there are 45 glass stars and 26 golden balls. Each glass star costs 4 dollars while a golden ball costs 3 more dollars than a glass star. What is the total cost of the glass stars and golden balls?