Question

three balls toll atintervals 6,15,20min respectively if the three ball toll together at 9:00 amafter how much interval did they toll together​

Answer 1

1 hour 5 minutes 10seconds

take 6,15,20 and divide it hear we need the LCM method

you can divide it by 2

2*3 is equal to y 3 comes down next you can put the qt directly down now because 2 numbers are at least getting divided now 2*10 is equal to 20 now 10 comes down the leftover numbers down are 3,15,10 now these first two numbers are divisible by 3 3*1 is equal to E 1 comes down 3*5 is equal to 15 now 5 comes down we can take 10 directly down these numbers (1,5,10) are not divisible by anything so the answer is 1 hour 5minutes 10 seconds