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Secondary School (English Medium) (5 to 8) कक्षा ७ - CBSE Question Bank Solutions for Mathematics

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Mathematics
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A fruit seller purchased 20 kg of apples at ₹ 50 per kg. Out of these, 5% of the apples were found to be rotten. If he sells the remaining apples at ₹ 60 per kg, then his ______ is ______%.

[7] Comparing Quantities
Chapter: [7] Comparing Quantities
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By selling a book for ₹ 50, a shopkeeper suffers a loss of 10%. The cost price of the book is ₹ 60.

[7] Comparing Quantities
Chapter: [7] Comparing Quantities
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If a chair is bought for ₹ 2000 and is sold at a gain of 10%, then selling price of the chair is ₹ 2010.

[7] Comparing Quantities
Chapter: [7] Comparing Quantities
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Sushma sold her watch for ₹ 3320 at a gain of ₹ 320. For earning a gain of 10% she should have sold the watch for ₹ 3300.

[7] Comparing Quantities
Chapter: [7] Comparing Quantities
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A vendor purchased 720 lemons at ₹ 120 per hundred.10% of the lemons were found rotten which he sold at ₹ 50 per hundred. If he sells the remaining lemons at ₹ 125 per hundred, then his profit will be 16%.

[7] Comparing Quantities
Chapter: [7] Comparing Quantities
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The cost of a flower vase got increased by 12%. If the current cost is ₹ 896, what was its original cost?

[7] Comparing Quantities
Chapter: [7] Comparing Quantities
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By selling a chair for ₹ 1440, a shopkeeper loses 10%. At what price, did he buy it?

[7] Comparing Quantities
Chapter: [7] Comparing Quantities
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A person wanted to sell a scooter at a loss of 25%. But at the last moment he changed his mind and sold the scooter at a loss of 20%. If the difference in the two SP’s is ₹ 4000, then find the CP of the scooter.

[7] Comparing Quantities
Chapter: [7] Comparing Quantities
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In an entertainment programme, 250 tickets of ₹ 400 and 500 tickets of ₹ 100 were sold. If the entertainment tax is 40% on ticket of ₹ 400 and 20% on ticket of  ₹ 100, find how much entertainment tax was collected from the programme.

[7] Comparing Quantities
Chapter: [7] Comparing Quantities
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Harish bought a gas-chullah for ₹ 900 and later sold it to Archana at a profit of 5 per cent. Archana used it for a period of two years and later sold it to Babita at a loss of 20 per cent. For how much did Babita get it?

[7] Comparing Quantities
Chapter: [7] Comparing Quantities
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Match the entries in Column I with the appropriate entries in Column II:

Column I Column II
(i) 3:5 (A) ₹ 54
(ii) 2.5 (B) ₹ 47
(iii) 100% (C) ₹ 53
(iv) `2/3` (D) ₹ 160
(v) `6 1/4%` (E) 60%
(vi) 12.5% (F) 25%
(vii) SP when CP = ₹ 50 and loss = 6 % (G) `1/16`
(viii) SP when CP = ₹ 50 and profit = ₹ 4 (H) 250%
(ix) Profit% when CP = ₹ 40 and SP = ₹ 50 (I) ₹ 159
(x) Profit% when CP = ₹ 50 and SP = ₹ 60 (J) `66 2/3%`
(xi) Interest when principal = ₹ 800,
Rate of interest = 10% per annum
nd period = 2 years
(K) 20%
(xii) Amount when principal = ₹ 150,
Rate of interest = 6% per annum
and period = 1 year
(L) 0.125
  (M) 3 : 2
  (N) ₹ 164
  (O) 3 : 3
[7] Comparing Quantities
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Area of the circle obtained in 196 m2 is ______.

[9] Perimeter and Area
Chapter: [9] Perimeter and Area
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Area of a rectangle and the area of a circle are equal. If the dimensions of the rectangle are 14 cm × 11 cm, then radius of the circle is ______.

[9] Perimeter and Area
Chapter: [9] Perimeter and Area
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Area of a circle with diameter ‘m’ radius ‘n’ and circumference ‘p’ is ______.

[9] Perimeter and Area
Chapter: [9] Perimeter and Area
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A table top is semicircular in shape with diameter 2.8 m. Area of this table top is ______.

[9] Perimeter and Area
Chapter: [9] Perimeter and Area
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If radius of a circle is increased to twice its original length, how much will the area of the circle increase?

[9] Perimeter and Area
Chapter: [9] Perimeter and Area
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If the radius of a circle is tripled, the area becomes ______.

[9] Perimeter and Area
Chapter: [9] Perimeter and Area
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Pizza factory has come out with two kinds of pizzas. A square pizza of side 45 cm costs ₹ 150 and a circular pizza of diameter 50 cm costs ₹ 160 (see figure). Which pizza is a better deal?

[9] Perimeter and Area
Chapter: [9] Perimeter and Area
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Find the area of the shaded region:

[9] Perimeter and Area
Chapter: [9] Perimeter and Area
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Find the area of the shaded region:

[9] Perimeter and Area
Chapter: [9] Perimeter and Area
Concept: undefined >> undefined
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