Welcome to your 08 math

1. 
After increasing the rate of book by 20% , It becomes ₹120. What is the original price of the book?

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2. 
A square park is surrounded by 1cm wide path. If area of the path is 136 sq cm, find the area of the park.

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3. 
If X × √0.0016 = 4, then the value of X is

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4. 
The petrol consumption of a car is 15 kilometres per liter. After a service the car does 7% more kilometres per liter . What is the new consumption?

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5. 
Three cubes each of side 10cm are joined end to end. Find the surface area of the resultant figure

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6. 
Find the greatest number of three digits that is a perfect square.

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7. 
What percent is 54 minutes of 2 hours?

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8. 
A rectangular park of length 70 m and breadth 50 m in a locality. Two crossroads perpendicular to each other of width 6 m needs to be constructed in between the park for walking. Find the area of Crossroads.

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9. 
A carpet of size 5 m x 2 m has 25 cm wide red border. The inner part of the carpet is blue in colour (see the figure). What is the ratio of areas of red portion to blue portion?

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10. 
The given figure shows a photograph mounted on a rectangle frame. The area of the photograph is

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11. 
In a off season sale, A shopkeeper is giving successive discounts 30% and 40% on every item. Find the single discount equivalent to these successive discounts.

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12. 
89 persons are going for rafting trip They can rent 5-person, 7-person, and 8-person rafts. All the rafts must be full in order to have the correct balance. The daily rental rates are: 5-person raft ₹240.00 7-person raft ₹280.00 8-person raft ₹340.00 What can be the minimum possible total cost of rafting?

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13. 
Selling price of an article is :

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14. 

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15. 
If √2 = 1.4142, then the value of √(2/9) is

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16. 
A number n is called a perfect cube if there exists.

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17. 
ABCD is a given rectangle with length as 90 cm and breadth as 80 cm. P, Q, R, S are the mid-points of sides AB, BC, CD, DA, respectively. A circular rangoli of diameter 20 cm is drawn at the centre as shown in the given figure. Find the area of shaded portion.

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18. 
The original price of a washing machine which was bought for ₹13,500 inclusive of 8% VAT is

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19. 
The volume of a cylinder whose radius r is equal to its height is

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20. 
Area of a right angled triangle is 30 sq cm. If its smallest side is 5 cm, then its hypotenuse is:

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