 Latest Teaching jobs   »   Maths Quiz for 2016-17 Exams

Maths Quiz for 2016-17 Exams

1. A is 2  1 ⁄ 3  times as fast as B. If A gives B a start of 80 m, how long should the race course be so that both of them reach at the same time?
A. 170 m
B. 150 m
C. 140 m
D. 160 m
Speed of A : Speed of B =  7 ⁄ 3  : 1 = 7 : 3
It means, in a race of 7 m, A gains (7-3)=4 m
If A needs to gain 80 m, race should be of 74×80 = 140 m

2. A can run 224 metre in 28 seconds and B in 32 seconds. By what distance A beat B?
A. 36 m
B. 24 m
C. 32 m
D. 28 m
Clearly, A beats B by 4 seconds
Now find out how much B will run in these 4 seconds
Speed of B =224/32=7 m/s
Distance covered by B in 4 seconds = Speed × time =7×4=28 m

3. In a 100 m race, A can beat B by 25 m and B can beat C by 4 m. In the same race, A can beat C by:
A. 21 m
B. 28 m
C. 26 m
D. 29 m
When A covers 100 m, B covers (100-25)=75 m
When B covers 100 m, C covers (100-4)=96 m
=When B covers 75 metre, C covers 96100×75=72 m
i.e., When A covers 100 m, B covers 75 m and C covers 72 m
= In a 100 m race, A beat C by (100-72)=28 m

4. A and B take part in 100 m race. A runs at 5 kmph. A gives B a start of 8 m and still beats him by 8 seconds. The speed of B is:
A. 4.4 kmph
B. 4.25 kmph
C. 4.14 kmph
D. 5.15 kmph
speed of A = 5 kmph = 5×5/18=25/18m/s
Time taken by A to cover 100 m=distance/speed=100/(25/18) = 72 seconds
It is given that, A gives B a start of 8 m and still beats him by 8 seconds.
= B takes (72+8)=80 seconds to cover (100-8)=92 metre
Speed of B =distance/time=92/80m/s=92/80×18/5 kmph = 4.14 kmph

5.In how many different ways can the letters of word‘PREVIOUS’ be arranged in such a way that the vowels always come together?
A. 50400
B. 4840
C. 3260
D. 2880
Total letters are ‘8’ and No of vowels = 4
So total no of ways=5! * 4! = 2880

6. To Finish a work, B will take three times as long as A and C together and C will take twice as long as A and B together. If the three persons A, B and C together can finish the work in 20 days , then how long will A take to finish the work alone?
A. 30 days
B. 45 days
C. 48 days
D. 60 days
3*B’s daily work= (A+C)’s daily work
4*B’s daily work = (A+B+C)’s daily work = 1/20
B’s daily work = 1/80
2*C’s daily work = (A+B)’s daily work
3*C’s daily work = (A+B+C)’s daily work = 1/20
C’s daily work= 1/60
A’s daily work= 1/20 – (1/80 + 1/60) = 1/48
A can finish the work in 48 days.

7.The ratio between the length and the breadth of a rectangular park is 3 : 2. If a man cycling along the boundary of the park at the speed of 12 km/hr completes one round in 8 minutes, then the area of the park (in sq. m) is:
A. 15360
B. 153600
C. 30720
D. 307200
Perimeter = Distance covered in 8 min. = (12000/60x 8)m = 1600 m.
Let length = 3x metres and breadth = 2x metres.
Then, 2(3x + 2x) = 1600 or x = 160.
Length = 480 m and Breadth = 320 m.
Area = (480 x 320) m2 = 153600 m^2

8. At present Ayushi is eight times her daughter’s age. Eight years from now, the ratio of the ages of Ayushi and her daughter will be 10 : 3 respectively. What is Ayushi’s present age ?
A. 32 years
B. 40 years
C. 36 years
D. Can’t say
Let the age of Ayushi’s daughter be x. Then Ayushi’s age is 8x.
(8x + 8)/ (x + 8) = 10/3
x = 4
Ayushi present age = 8x = 32 years.

9. In how many different ways can 4 boys and 3 girls be arranged in a row such that all the boys stand together and all the girls stand together?
A. 75
B. 576
C. 288
D. 24
Required number of ways = 4! * 3! * 2! = 288.

10. A radio is sold for Rs 990 at a profit of 10%. What would have been the gain or loss in percentage had it been sold for Rs 880?
A. 19/3%  gain
B. 17/3% loss
C. 17% gain
D. 20/9% loss
Let the CP is Rs x.
Then, x * 110/100  = 990
x = 900
Now CP is Rs 900 and SP is 880.
% loss =  20/900 * 100 = 20/9% Join India's largest learning destination

What You Will get ?

• Job Alerts
• Daily Quizzes
• Subject-Wise Quizzes
• Current Affairs
• Previous year question papers
• Doubt Solving session

OR Join India's largest learning destination

What You Will get ?

• Job Alerts
• Daily Quizzes
• Subject-Wise Quizzes
• Current Affairs
• Previous year question papers
• Doubt Solving session

OR Join India's largest learning destination

What You Will get ?

• Job Alerts
• Daily Quizzes
• Subject-Wise Quizzes
• Current Affairs
• Previous year question papers
• Doubt Solving session

Enter the email address associated with your account, and we'll email you an OTP to verify it's you. Join India's largest learning destination

What You Will get ?

• Job Alerts
• Daily Quizzes
• Subject-Wise Quizzes
• Current Affairs
• Previous year question papers
• Doubt Solving session

Enter OTP

Please enter the OTP sent to
/6

Did not recive OTP?

Resend in 60s Join India's largest learning destination

What You Will get ?

• Job Alerts
• Daily Quizzes
• Subject-Wise Quizzes
• Current Affairs
• Previous year question papers
• Doubt Solving session Join India's largest learning destination

What You Will get ?

• Job Alerts
• Daily Quizzes
• Subject-Wise Quizzes
• Current Affairs
• Previous year question papers
• Doubt Solving session

Almost there

+91 Join India's largest learning destination

What You Will get ?

• Job Alerts
• Daily Quizzes
• Subject-Wise Quizzes
• Current Affairs
• Previous year question papers
• Doubt Solving session

Enter OTP

Please enter the OTP sent to Edit Number

Did not recive OTP?

Resend 60

By skipping this step you will not recieve any free content avalaible on adda247, also you will miss onto notification and job alerts

Are you sure you want to skip this step?

By skipping this step you will not recieve any free content avalaible on adda247, also you will miss onto notification and job alerts

Are you sure you want to skip this step?