Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 10 Answered

question
question image
Asked by arindeep.singh | 15 Jul, 2020, 06:23: PM
answered-by-expert Expert Answer
Q: Six bells commerce tolling together and toll at intervals of 2, 4, 6, 8, 10, 12 minutes respectively. In 30 hours, how many times do they toll together?
Solution: 

Six bells commence tolling together and toll at intervals of 2, 4, 6, 8, 10, 12 minutes respectively.

Hence, using LCM of the given numbers which is 120 we conclude that bell will toll together after 120 seconds = 2 minutes.

In 30 hours, they will toll together in begin mathsize 16px style open parentheses 30 over 2 close parentheses equals 15 end style times and 1 (at the starting).

Hence, total number of times the bells toll together is 15 + 1 = 16

Answered by Renu Varma | 16 Jul, 2020, 12:29: PM

Application Videos

Concept Videos

Multiple Choice Questions Practice Test Subjective Questions Webinar Subjective Questions Pre Board Assessment
Answered Unanswered My Questions My Answers
CBSE 10 - Maths
(SinA/1+CosA + 1+cosA/sinA) (sinA/1-cosA - 1-cosA/sinA)=4cosecAcotA    
Asked by prasadshruti9999 | 03 Jun, 2023, 10:05: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
cot2 30-2cos2 60-3/4sec2 45-4sec2 30
question image
Asked by Akhandp457 | 29 May, 2023, 09:06: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
find the zeroes of the quadratic polynomial and verify the relationship between the zeroes and the coffiecient 4u+8u
Asked by dimpaldihingia2 | 24 May, 2023, 06:10: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
if sin theta = root3/2, find the value of all t- ratios
Asked by akhilthainuan | 22 May, 2023, 02:11: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
If α and β are tge zeros of the polynomial x^2 - 6x + k and 3α + 2β=20 , then the value of k is
Asked by ruchipandey20071978 | 21 May, 2023, 10:00: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
If one of the zeros of the quadratic polynomial (k - 1)x^2 + kx + 1 is -3, then the value of k
Asked by ruchipandey20071978 | 21 May, 2023, 09:57: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
If the sum of the zeors of the polynomial f (x)=2x^3 - 3kx^2 +4x - 5 is 6 , then the value of k is
Asked by ruchipandey20071978 | 21 May, 2023, 05:32: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
If two zeros of x^3 + x^2 - 5x - 5 are √5 and - √5, then its third zero is
Asked by ruchipandey20071978 | 21 May, 2023, 05:29: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
The value of k for which the system of equestions kx-y=2 and 6x-2y=3 has a uniqe solution is..
Asked by ruchipandey20071978 | 11 May, 2023, 06:55: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
a regular polygon has 20 sides. how many triangles can be drawn by using the vertices but not using the sides?
Asked by gavhanenisha0310 | 09 May, 2023, 04:10: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt