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  • RRB NTPC Exam Arithmetic Ability Study Material

Digitization help student to explore and study their academic courses online, as this gives them flexibility and scheduling their learning at their convenience. Kidsfront has prepared unique course material of Arithmetic Ability Arithmetic for RRB NTPC Exam student. This free online Arithmetic Ability study material for RRB NTPC Exam will help students in learning and doing practice on Arithmetic topic of RRB NTPC Exam Arithmetic Ability . The study material on Arithmetic, help RRB NTPC Exam Arithmetic Ability students to learn every aspect of Arithmetic and prepare themselves for exams by doing online test exercise for Arithmetic, as their study progresses in class. Kidsfront provide unique pattern of learning Arithmetic Ability with free online comprehensive study material and loads of RRB NTPC Exam Arithmetic Ability Arithmetic exercise prepared by the highly professionals team. Students can understand Arithmetic concept easily and consolidate their learning by doing practice test on Arithmetic regularly till they excel in Arithmetic Ability Arithmetic.


Arithmetic

A man travels for 5 h 15 mm. If he covers the first half of the journey at 60 km/h and rest at 45 km/h. Find the total distance travelled by him.

a) 378km
b) 189km
c) 1008 *6/7 km
d) 240km



Answer
Solution
Correct Answer Is : 240km
Solution Is : Let the total distance = d km According to the question. (d/2)/60+ (d/2)/45 =21/4,d=240 Km
If a man were to sell his hand-cart for Z 720, h would lose 25%. At what price must he sell it to gain 25%?

a) 1152
b) 960
c) 1200
d) 768



Answer
Solution
Correct Answer Is : 1200
Solution Is : Selling price of watch = 720 Loss = 25%
Let the cost price of watch = x
(100? 25)%O f X =720
125 x720 = 1200
125% of x = 125X720/75 =1200

A can do in one day three times the work done by B j one day. They together finish 2 of the work in 9 days. The 5 number of days by which B can do the work alone is

a) 100
b) 120
c) 90
d) 30



Answer
Solution
Correct Answer Is : 30
Solution Is : RatIo of efficiency of A and B = 3:1
Ratio of time of AandB= 1:3
Work done by A and B in one day = 4/(3X)
Work done by AandB in9 days =12/X
As per condition 2/5=12/X , X=30

At what rate of compound interest per annum will, a sum of 1200 become 1348.32 in 2 yr?

a) 0.07
b) 0.065
c) 0.075
d) 0.06



Answer
Solution
Correct Answer Is : 0.06
Solution Is : Given , P=12OO, n=2,A=1348.32 ,Formula , Compound A=P(1+R/100)n = 6%

Among the following statements, the statement which is not correct is

a) Every natural number is an integer
b) Every integer is a rational number
c) Every real number is a rational number
d) Every natural number is a real number



Answer
Solution
Correct Answer Is : Every real number is a rational number
Solution Is : Every real number is rational and irrational number

How much (66/3 )% of 312 exceeds 200?

a) 8
b) 4
c) 96
d) 104



Answer
Solution
Correct Answer Is : 8
Solution Is : 66X2/3 % of 312 = 200+ x,312X(200/300) =2OO+ x
208=200+ x=208-200=8

After allowing a discount of 20%, a radio is available for 1200. Its marked price was

a) 1400
b) 1800
c) 1500
d) 1550



Answer
Solution
Correct Answer Is : 1500
Solution Is : 80%=1200 ,100%=1200 x 100 / 80 = 1500

Theaverage of 12 numbers is 15 and the average of the first two is 14. What is the average of the rest?

a) 14
b) 15x(1/5)
c) 15
d) 14x1/5



Answer
Solution
Correct Answer Is : 15x(1/5)
Solution Is : Average of 12 numbers =15 , Sum of 12 numbers=12 x 15 =180
Similarly, sum of first two numbers =2 x 14=28
Sum of remaining numbers = 180? 28= 152
So, the required average = 15 x(1/5 )

A, B and C can complete a piece of work in 24, 5 and 12 days respectively. Working together, they Will complete the same work in

a) 4days
b) 3 1/13 days
c) (7/24)days
d) (1/24) days



Answer
Solution
Correct Answer Is : 3 1/13 days
Solution Is : L.C.M Of 24 , 5 , 12 = 120 so the required time is 120/39= 3 x (1/13)
If the ratio of principal and the simple interest of 5 years is 10:3, then the rate of interest is :

a) 5%
b) 3%
c) 8%
d) 6%



Answer
Solution
Correct Answer Is : 6%
Solution Is : Let the principle ammount is 10x , and interest is 3x , simple interest = PTR/100 , R=300/50=6
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