Four bells toll at intervals of 8, 9, 12 and 15 minutes respectively. If they toll
together at 3 p.m., when will they toll together next?
Answers
Answer:
Given that, four bells toll after an interval of 8,9,12,15 minutes ,respectively. These bells begin to toll together at 3.p.m. We have to find the time at which they toll again.
For this, first we have to calculate the L.C.M of given numbers.
Factors of 8 are 2 x 2 x 2
Factors of 9 are 3 x 3
Factors of 12 are 2 x 2 x 3
Factors of 15 are 3 x 5
Common factors are 2 x 2 x 3 x 2 x 3 x 5
Hence, L.C.M = 360
Which shows that the four balls toll together after 360 minutes.
Now we convert these minutes into hours.
We know that,
60 minutes = 1 hour
360 minutes = (1 / 60 ) . 360
= 6 hours
As it is given that the bells begin to toll together at 3 p.m
So next toll will be after 6 hours.
Thus 3 p.m + 6 hours
which clearly shows that the bells toll together again at 9 p.m
quarterfreelp and 457 more users found this answer helpful
THANKS
267
4.6
(191 votes)
Log in to add comment
Answer
4.8/5
157
lknk5353
Ambitious
7 answers
259 people helped
hope this will help you.......
hendikeps2 and 288 more users found this answer helpful
THANKS
157
4.8
(132 votes)
Log in to add comment
The Brain
The Brain Helper
Not sure about the answer?
SEE NEXT ANSWERS
Newest Questions
6. The area of a trapezium is 180 cm? and one of its parallel side is longer than theother by 6 cm. Find the measure of both the sides if the altitude
Hello !!!!!!Happy Independence Day ..
Ces3. Multiply:(a) 1.6 by 0.9
Please Factorise 6x+18
Find the LCM of the following numbers by common Division method (i) 72 and 96
Find any five rational numbers between -2/3 and -4/7 pls I need the answer in step by step
A and B start on a job which a can complete in 6 days and B in 8 days after 2 days B Falls ill how long will it take to complete the rest of the job
Plzzzz inbox meeee plzzzz
6. Find the LCM of the following numbers by common division method :(i) 72 and 96(ii) 42 and 70(iii) 48 and 64(iv) 108 and 32(v) 55 and 66(vi) 30 and
If y^2 + 1/y^2= 18 , find the value of y - 1/y.plz answer it's important. no spam plz .