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Class 8 Maths
Direct And Inverse Proportion
Quiz 1
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x and y are in direct proportion, Match the column
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p -> ii, q -> iii , r -> i
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p -> i, q -> ii , r -> iii
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p -> iii, q -> ii , r -> i
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p -> iii, q -> i , r -> ii
x and y are in inverse proportion, Match the column
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p -> ii, q -> iii , r -> i
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p -> i, q -> ii , r -> iii
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p -> iii, q -> ii , r -> i
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p -> iii, q -> i , r -> ii
which of the following statement is correct?
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If x and y are in direct proportion, then (x – 1) and (y – 1) are also in direct proportion.
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If two quantities x and y vary directly with each other, then x/y is constant
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If two quantities p and q vary inversely with each other, then x/y is constant
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If d varies directly as $t^2$ , then we can write $dt^2 = k$, where k is some constant.
In a hostel of 50 boys, there are food provision for 40 days, if 30 more boys join the hostel, the food provision will last for ?
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25 days
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30 days
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20 days
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15 days
A pipe can fill a tank in 20 hrs . Due to a leak in the bottom of the tank, it is filled in 25 hrs . if the tank is full how much time will the leak take to empty it.
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60 hours
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80 hours
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100 hours
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75 hours
30 persons can reap a field in 17 days. How many more persons should be engaged to reap the same field in 10 days?
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21
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20
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25
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15
If the wages of 15 workers for 6 days are RsThe wages of 19 workers for 5 days is
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Rs 9800
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Rs 9975
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Rs 9745
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Rs 9560
Both x and y vary directly with each other and when x is 10, y is 14, which of the following is not a possible pair of corresponding values of x and y?
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25 and 35
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21 and 15
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35 and 49
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55 and 77
A ,B and C together complete a piece of work in 4 days. A alone completes it in 12 days and B alone in 15 days. C alone will finish the work in?
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16 days
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15 days
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12 days
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10 days
Which of the following quantities does not vary directly with each other?
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Simple interest on a given sum and the rate of interest.
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Side of the square and its perimeter
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The distance travelled by CNG bus and the amount of CNG used.
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Compound interest on a given sum and the sum invested.
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