
- 能力傾向有用資源
- 能力傾向 - 問答
能力傾向 - 比例線上測驗
以下測驗提供與比例相關的多項選擇題 (MCQ)。您需要閱讀所有給出的答案,然後點選正確的答案。如果您不確定答案,可以使用顯示答案按鈕檢查答案。您可以使用下一組測驗按鈕在測驗中檢視新的一組問題。

答案:C
解釋
Let the number of boys and girls be x and y respectively. Then (x-y) = 16% of (x+y) (x-y)= 4/25(x+y) 25x-25y = 4x+4y =>21x = 29y x/y = 29/21 =>x:y = 29:21
答案:A
解釋
A/C = (a/b *b/c) = (2/3*4/5 ) = 8/15 C/A =15/8 , so C:A = 15:8
答案:B
解釋
2A =3B thus A/B=3/2 and 4B=5C thus B/C = 5/4 ∴ A/C=(A/B*B/C) = (3/2*5/4) = 15/8 A:C =15:8.
答案:C
解釋
Let the numbers be 3x and 4x. At that point, 3x+6/4x+6 = 4/5 => 5 (3x+6) =4 (4x+6) => x=(30-24) =6 Contrast between the numbers = (4x-3x) = x = 6.
問題 6 - An 和 B 的收入比例為 8:9,如果 An 的收入增加一半,而 B 的收入減少 25%,他們新的收入比例為 16:9,An 的收入是多少?
答案:D
解釋
New earnings of A and B=Rs (150% of 8x), Rs (75%of 9x) =Rs (150/100*8x), Rs (75/100*9x) = Rs 12x,Rs 27x/4 Ratio of new earnings = 12x: 27x/4 = 48:27 = 16:9. Thus, we cannot find A's earnings.
答案:C
解釋
Let the numbers be x and y. Then, Y+ 20x/100 = (150/100)y => x/5 ={ (3/2)y-y}= y/2 => 2x-5y => x/y=5/2 => x:y =5:2
問題 8 - 當給定的兩個數中每個數都加 1 時,它們的比例變成 3:4;當每個數都減去 5 時,它們的比例變成 7:10。這兩個數是多少?
答案:C
解釋
Let two number be x and y. Then, X+1/y+1=3/4 => 4x +4 = 3y+ 3 => 3y- 4x = 1 x-5/y-5=7/10 =>10x ? 50 = 7 ? 35 =>7y-10x = -15 Multiplying (i) by 5, (ii) by 2 and subtracting, we get Y=35. Putting y = 35 in (i), we get 4x =104 => x=26.
問題 9 - 將一些錢分給 A、B 和 C,使得 5 倍 A 的份額、3 倍 B 的份額和 2 倍 C 的份額都相等。A、B 和 C 的份額之間的比例是多少?
答案:D
解釋
Let 5A= 3B= 2C=k. Then, A = k/5, B = k/3 and C = k/2 ∴ A:B:C =k/5 :k/3:k/2 =6:10:15.
問題 10 - 兩個相同的玻璃杯分別裝有 1/3 和 1/4 的牛奶。然後用清水將它們裝滿,並將混合物倒入一個杯子裡。杯子裡牛奶和水的比例是多少?
答案:B
解釋
First glass contains milk =1/3, water=2/3. Second contains milk =1/4,water=3/4. New tumbler contains milk=(1/3+1/4)=7/12,water=(2/3+3/4)=17/12. Ratio of milk and water in it =7/12:7/12=7:17.
aptitude_ratios.htm
廣告