Simple Arithmatic

Arithmetic & Mental Ability – 19

Which number when added to each of the numbers 6, 7, 15, 17 will make the resulting numbers proportional?

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The ratio between the speeds of two trains is 7: 8. If the second train runs 440 kms in 4 hours, then the speed of the first train is:
a) 47.4 km/hr
b) 57.19 km/hr
c) 68.13 km/hr
d) 96.25 km/hr
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A reduction of 10% in the price of a T.V. set brought down its price by ₹1,650. The original price of the set (in rupees) was
a) 16,500
b) 16,000
c) 15,000
d) 16,550
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In a certain code language, 'pen pencil' is written as '$&', 'eraser sharpener' is written as '@#' and 'pencil eraser' is written as '$@'. Then what is the code for 'pen?
a) #
b) $
c) @
d) &
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A jar contain 10 red marbles and 30 green ones. How many red marbles must be added to the jar so that 60% of the marbles will be red ?
a) 25
b) 30
c) 35
d) 40
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A man, a woman and a boy can complete a work in 20 days, 30 days and 60 days respectively. How many boys must assist 2 men and 8 women so as to complete the work in 2 days?
a) 8
b) 12
c) 4
d) 6
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Which number when added to each of the numbers 6, 7, 15, 17 will make the resulting numbers proportional?
a) 6
b) 5
c) 4
d) 3
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Five years ago, the average age of A, B, C and D was 45 yr. with E joining them now, the average of all the five is 49 yr. How old is E?
a) 25 yr
b) 40 yr
c) 45 yr
d) 64 yr
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In a certain code Mouse is written as PRUQC. How is ‘SHIFT’ Written in that same code
a) VKIRD
b) VKIDR
c) VJIDR
d) VIKRD
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What is the difference between the compound interests on Rs. 5000 for 3/2 years at 4% per annum compounded yearly and half-yearly?
a) Rs. 2.04
b) Rs. 3.06
c) Rs. 4.80
d) 8.3
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Look at this series: 2, 1, (1/2), (1/4), … What number should come next?
a) (1/3)
b) (1/8)
c) (2/8)
d) (1/16)
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A man takes 5hr 45min in walking to certain place and riding back. He would have gained 2hrs by riding both ways. The time he would take to walk both ways is?
a) 7 hr 45 min
b) 7 hr 15 min
c) 6 hr 45 min
d) 6 hr 15 min
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Which of the following word come in the middle if arrange alphabetically as in the dictionary 1. Butterfly 2. Butler 3. Butcher 4. Button 5. Butter
a) Butler
b) Button
c) Butcher
d) Butter
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A man driving at ¾th of his original speed reaches his destination 20 minutes later than the usual time. Then the usual time is
a) 45 minutes
b) 60 minutes
c) 75 minutes
d) 120 minutes
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The value of an article depreciates every year at the rate of 10% of its value. If the present value of the article is 3729, then its worth 3 years ago was
a) ₹ 1,250
b) ₹ 1,000
c) ₹ 1,125
d) ₹ 1,200
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If 38+15=66 and 29+36=99 then 82+44=…..
a) 77
b) 88
c) 80
d) 94
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A cube with all the sides painted was divided into small cubes of equal measurement. The side of a small cube is exactly one fourth as that of the big cube. Therefore, the number of small cubes with only one side painted is
a) 64
b) 36
c) 24
d) 12
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The banker's gain of a certain sum due 2 years hence at 10% per annum is Rs. 24. The present worth is:
a) Rs. 480
b) Rs. 520
c) Rs. 600
d) Rs. 960
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If 16*8 = 32, 20*6 = 30, then find the value of 18*8 =
a) 60
b) 72
c) 36
d) 13
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A is two years older than B who is twice as old as C. If the total of the ages of A, B and C be 27, the how old is B?
a) 7
b) 9
c) 8
d) 10
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A certain sum grows upto ₹4840 in 2 years and upto ₹5324 in 3 years on compound interest. Find the rate per cent.
a) 5%
b) 10%
c) 15%
d) 20%
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Deepa bought a calculator with 30% discount on the listed price. Had she not got the discount, she would have paid Rs. 82.50 extra. At what price did she buy the calculator?
a) Rs. 192.50
b) Rs. 275
c) Rs. 117.85
d) can’t be determined
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Two pipes are connected to a water tank. The first pipe can fill the tank in 10 minutes and the second pipe can empty it in 15 minutes. If both pipes opened simultaneously, then find the time in which the tank will be completely filled with water.
a) 20 minutes
b) 40 minutes
c) 25 minutes
d) 30 minutes
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A father said to his son, “I was as old as you are at the present at the time of your birth”. If the father”s age is 38 years now, the son”s age five years back was:
a) 14 years
b) 19 years
c) 33 years
d) 38 years
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The sum of the present age of the father and his daughter is 42 years. 7 years later, the father will be 3 times old than the daughter. The present age of the father is
a) 32
b) 28
c) 35
d) 33
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Find the odd letters out
a) ACE
b) PRT
c) UWY
d) MNO
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