11. The price of oil is increased by 25%. If the expenditure is not allowed to increase, the ratio between the reduction in consumption and the original consumption is :
Answer:
Explanation:Let the price be Rs 10 per litre and the consumption be 10 Kg
Given, increased price is 25% of 10 = 2.5 + 10 = Rs 12.5 per litre
So, according to the question if the price is not allowed to increase then how much can be consumed on the original price that is Rs 10
So, On 12.5 rupees the consumption is = 1 litre
On 1 rupee the consumption is = 1/12.5
On 10 rupees the consumption is = 1/12.5 X 10 = 4/5
So, for Rs 10 we consume only 4/5 litre instead of 1 litre
So, the reduction in consumption is 1 - 4/5 = 1/5
Therefore reduction in consumption : original consumption
That is, 1/5:1 = 1:5 is the answe
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Hexaware Technologies
12. Radius of a circle is 5cm, if we draw a rectangle of maximum size, what is the area of rectangle?
Answer:
Explanation:Area of rectangle of max size inside circle will be a square with diagonal equal to 10 cms.
Then side of square = Root (100/2) = Root 50
Area of square = Root 50 * Root 50 = 50 sq cms.
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Hexaware Technologies
13. a,b,c,d,e sitting in a row what is the probability that a & b sitting adjacent.
Answer:
Explanation:total number of arrangement is= 5!= 120
Favorable event i.e a and b can be arranged in 2! and the remaining can be arranged in 4! since ab can be in any of the four positions.
so 4!*2!/5! = 2/5
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Hexaware Technologies
14. A student got 70% in one subject, 80% in other. To get overall 75% how much he should get in third subject?
Answer:
Explanation:Overall, 75% means = 75* 3 = 225
70 + 80 = 150 in two subjects.
3rd subject = 225 - 150 = 75
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Hexaware Technologies
15. A bank advertises that you can double the money if you invest it with them for 8 years, what is the rate of Interest offered by them?
Answer:
Explanation:Simple Interest formula
I = (P*T*R)/100
where P is principle amount
T is time period
R is rate of interest
now they said that your money will be doubled
So interest becomes same as our principle amount
So, p=(p*t*r) /100, (cancel p on both sides)
=>t*r=100
=>r=100/t
=>r=12.5 as given t=8
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Hexaware Technologies
16. What is the remainder of (3682*3684*3686) divided by 19?
Answer:
Explanation:Because 3682/19=0.
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Hexaware Technologies
17. A room is a square of side 50 feet. A second room is of area 100 square yards. A third room is of area 200 square feet.Which of these can seat maximum people? (Hint:1 yard=3feet)
Answer:
Explanation:First room because area 50*50=2500 sq feet
Second room area 100 sq yard in feet 300 sq feet
Third room area 200 sq feet.
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Hexaware Technologies
18. I was facing west.I turned 125 degree in the clockwise direction and 10degree in the anticlockwise direction.Which direction am i facing now?
Answer:
Explanation:N
W E
S
Clockwise degree - Anti-clockwise degree 115%
90% of W = N
115-90=25 degree . 25 degree of N will lie between N and E = North-East
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Hexaware Technologies
19. A wholesaler allows a discount of 20 % on the list price to the retailer. The retailer sells at 5% below the list price. If the customer pays Rs.19 for an article what profit is made by the retailer on it?
Answer:
Explanation:retailer sells good @ 95 % of list price
x*95/100=19 (given from the question)
x=1
so original list price=19+1=20
Wholesaler allowed 20 % discount on Rs 20
so 20% of 20 =4
original price for retailer = 20-4=16
and profit of retailer=19-16=3
so option B is a right answer
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Hexaware Technologies
20. The price of a commodity was raised by 25%. So what is % amount of commodity would be reduced by family so that the amount spent on the commodity remains same?
Answer:
Explanation:Lets say price of commodity is 100
After raising price by 25% new price=125
To make it 100 again,
25=125*x/100, x% has to be reduced that is = 20%
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Hexaware Technologies
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