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1. Winnie and Lily have a total amount of $40.If Winnie's amount is 4 time as much as Lily's, find Lily's amount.2. Simon is 32 years older than his son. After 6 years, the sum of their ages will be 50. Find the current age of Simon's son. 3. The total price of 24 books is... 顯示更多 1. Winnie and Lily have a total amount of $40.If Winnie's amount is 4 time as much as Lily's, find Lily's amount. 2. Simon is 32 years older than his son. After 6 years, the sum of their ages will be 50. Find the current age of Simon’s son. 3. The total price of 24 books is $405. Some of them are at $15 each and the others at $20 each. Find the number of books that are sold at $15 each. 4. York has $72. Sally has $15. In order to let Sally have 3 time the amount of York, how much should York give Sally? 5. A sum of money is planned to be evenly shared among 10 persons. Due to the absence of 2 persons, each person present can get $30 more. Find the sum of money. 6. Carl has $9 more than David does. Hilbert has 1/3 of the amount of Carl. If they have a total amount of boys and girls there. 7. 72 marbles are divided into two groups. 7 time the number of marbles in the smaller group is equal to 5 times that in the larger group. Find the number of marbles in the smaller group. 8. The total age of Hebrew and his son is 51.3 years ago, Hebrew is 8 time as old as his son. Find the current age of Hebrew’s son. 9. Concert tickets in $400, $200 and $100 each are available for sale. The number of $200 tickets sold is 4 times as many as that of $400 tickets. The number of $100 tickets sold is 380 more than that of $200 tickets. If the total income from the sale of tickets is $86000, how many $400 tickets are sold? 唔該要詳細列式!! ☆Thanks~★ 更新: 6.Carl has $9 more than David does. Hilbert has 1/3 of the amount of Carl. If they have a total amount of $61, how nuch does each of them have?
最佳解答:
1. Let Lily's amount be x so the total amount of them is 4x+x 4x+x = 40 x = 8 Lily's amount is $8 2.Let Simon's son's age be x so (32+x+6)+(x+6) = 50 x = 3 The age of his son is 3 3 Let the number of books that are sold at $15 each be x 15x+(24-x)20 = 405 x = 15 The number of books that are sold at $15 each is 15 4. Let the amount that York give Sally be x 3(72-x) = (15+x) x = 50.25 5. Let the sum of money be x x/10+30 = x/8 x = 1200 6. 問題未完？ 7. Let the number of marbles in the smaller group be x 7x = 5(72-x) x = 30 8. Let the current age of Hebrew's son be x 8x+x = 51.3 x = 5.7 9. Let the amount of $400 tickets are sold be x 100(4x+380)+200(4x)+400(x) = 86000 x = 30
其他解答:
6. Let x be the money of Carl. x+(x-9)+x/3=61 2x+x/3=70 6x+x=210 x=30 therefore,Carl has $30,David has $21, Hilbert has $10.|||||1. Let Lily has y amount of money 4y+y=40 y=8 so Lily has 8 dollars. 2.0D7DAC4E6DF60DFA
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超急!!!s1 maths發問:
1. Winnie and Lily have a total amount of $40.If Winnie's amount is 4 time as much as Lily's, find Lily's amount.2. Simon is 32 years older than his son. After 6 years, the sum of their ages will be 50. Find the current age of Simon's son. 3. The total price of 24 books is... 顯示更多 1. Winnie and Lily have a total amount of $40.If Winnie's amount is 4 time as much as Lily's, find Lily's amount. 2. Simon is 32 years older than his son. After 6 years, the sum of their ages will be 50. Find the current age of Simon’s son. 3. The total price of 24 books is $405. Some of them are at $15 each and the others at $20 each. Find the number of books that are sold at $15 each. 4. York has $72. Sally has $15. In order to let Sally have 3 time the amount of York, how much should York give Sally? 5. A sum of money is planned to be evenly shared among 10 persons. Due to the absence of 2 persons, each person present can get $30 more. Find the sum of money. 6. Carl has $9 more than David does. Hilbert has 1/3 of the amount of Carl. If they have a total amount of boys and girls there. 7. 72 marbles are divided into two groups. 7 time the number of marbles in the smaller group is equal to 5 times that in the larger group. Find the number of marbles in the smaller group. 8. The total age of Hebrew and his son is 51.3 years ago, Hebrew is 8 time as old as his son. Find the current age of Hebrew’s son. 9. Concert tickets in $400, $200 and $100 each are available for sale. The number of $200 tickets sold is 4 times as many as that of $400 tickets. The number of $100 tickets sold is 380 more than that of $200 tickets. If the total income from the sale of tickets is $86000, how many $400 tickets are sold? 唔該要詳細列式!! ☆Thanks~★ 更新: 6.Carl has $9 more than David does. Hilbert has 1/3 of the amount of Carl. If they have a total amount of $61, how nuch does each of them have?
最佳解答:
1. Let Lily's amount be x so the total amount of them is 4x+x 4x+x = 40 x = 8 Lily's amount is $8 2.Let Simon's son's age be x so (32+x+6)+(x+6) = 50 x = 3 The age of his son is 3 3 Let the number of books that are sold at $15 each be x 15x+(24-x)20 = 405 x = 15 The number of books that are sold at $15 each is 15 4. Let the amount that York give Sally be x 3(72-x) = (15+x) x = 50.25 5. Let the sum of money be x x/10+30 = x/8 x = 1200 6. 問題未完？ 7. Let the number of marbles in the smaller group be x 7x = 5(72-x) x = 30 8. Let the current age of Hebrew's son be x 8x+x = 51.3 x = 5.7 9. Let the amount of $400 tickets are sold be x 100(4x+380)+200(4x)+400(x) = 86000 x = 30
其他解答:
6. Let x be the money of Carl. x+(x-9)+x/3=61 2x+x/3=70 6x+x=210 x=30 therefore,Carl has $30,David has $21, Hilbert has $10.|||||1. Let Lily has y amount of money 4y+y=40 y=8 so Lily has 8 dollars. 2.0D7DAC4E6DF60DFA
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