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Secondary School (English Medium) (5 to 8) Class 8 - CBSE Question Bank Solutions for Mathematics

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Complite the following table given that x varies directly as y

x 2.5 ... ... 15
y 5 8 12 ...
[11] Direct and Inverse Proportions
Chapter: [11] Direct and Inverse Proportions
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Complite the following table given that x varies directly as y .

x 5 ... 10 35 25 ...
y 8 12 ... ... ... 32
[11] Direct and Inverse Proportions
Chapter: [11] Direct and Inverse Proportions
Concept: undefined >> undefined

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Complite the following table given that x varies directly as y

x 6 8 10 ... 20
y 15 20 ... 40 ...
[11] Direct and Inverse Proportions
Chapter: [11] Direct and Inverse Proportions
Concept: undefined >> undefined

Complite the following table given that x varies directly as y

x 4 9 ... ... 3 ...
y 16 ... 48 36 ... 4
[11] Direct and Inverse Proportions
Chapter: [11] Direct and Inverse Proportions
Concept: undefined >> undefined

Complite the following table given that x varies directly as y

x 3 5 7 9
y ... 20 28 ...
[11] Direct and Inverse Proportions
Chapter: [11] Direct and Inverse Proportions
Concept: undefined >> undefined

Rohit bought 12 registers for Rs 156, find the cost of 7 such registers.

 
[11] Direct and Inverse Proportions
Chapter: [11] Direct and Inverse Proportions
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Anupama takes 125 minutes in walking a distance of 100 metre. What distance would she cover in 315 minutes?

[11] Direct and Inverse Proportions
Chapter: [11] Direct and Inverse Proportions
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If the cost of 93 m of a certain kind of plastic sheet is Rs 1395, then what would it cost to buy 105 m of such plastic sheet?

[11] Direct and Inverse Proportions
Chapter: [11] Direct and Inverse Proportions
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Suneeta types 1080 words in one hour. What is her GWAM (gross words a minute rate)?

 
[11] Direct and Inverse Proportions
Chapter: [11] Direct and Inverse Proportions
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A car is travelling at the average speed of 50 km/hr. How much distance would it travel in 12 minutes?

[11] Direct and Inverse Proportions
Chapter: [11] Direct and Inverse Proportions
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68 boxes of a certain commodity require a shelf-length of 13.6 m. How many boxes of the same commodity would occupy a shelf length of 20.4 m?

[11] Direct and Inverse Proportions
Chapter: [11] Direct and Inverse Proportions
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In a library 136 copies of a certain book require a shelf-length of 3.4 metre. How many copies of the same book would occupy a shelf-length of 5.1 metres?

 
[11] Direct and Inverse Proportions
Chapter: [11] Direct and Inverse Proportions
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The second class railway fare for 240 km of Journey is Rs 15.00. What would be the fare for a journey of 139.2 km?

[11] Direct and Inverse Proportions
Chapter: [11] Direct and Inverse Proportions
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If the thickness of a pile of 12 cardboards is 35 mm, find the thickness of a pile of 294 cardboards.

[11] Direct and Inverse Proportions
Chapter: [11] Direct and Inverse Proportions
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The cost of 97 metre of cloth is Rs 242.50. What length of this can be purchased for Rs 302.50?

[11] Direct and Inverse Proportions
Chapter: [11] Direct and Inverse Proportions
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11 men can dig \[6\frac{3}{4}\] metre long trench in one day. How many men should be employed for digging 27 metre long trench of the same type in one day?

 
 
[11] Direct and Inverse Proportions
Chapter: [11] Direct and Inverse Proportions
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A worker is paid Rs 210 for 6 days work. If his total income of the month is Rs 875, for how many days did he work?

[11] Direct and Inverse Proportions
Chapter: [11] Direct and Inverse Proportions
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A woker is paid Rs 200 for 8 days work. If he works for 20 days, how much will he get?

 
[11] Direct and Inverse Proportions
Chapter: [11] Direct and Inverse Proportions
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The amount of extension in an elastic string varies directly as the weight hung on it. If a weight of 150 gm produces an extension of 2.9 cm, then what weight would produce an extension of 17.4 cm?

[11] Direct and Inverse Proportions
Chapter: [11] Direct and Inverse Proportions
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The amount of extension in an elastic spring varies directly with the weight hung on it. If a weight of 250 gm produces an extension of 3.5 cm, find the extension produced by the weight of 700 gm.

[11] Direct and Inverse Proportions
Chapter: [11] Direct and Inverse Proportions
Concept: undefined >> undefined
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