Four bells commence tolling together at 1: 00 pm and toll at intervals of 2, 4, 6 and 8 minutes respectively. At what time will the bells toll together again?

1 : 28 pm

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1 : 20 pm

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1 : 16 pm

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1 : 24 pm

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Solution

The correct option is D 1 : 24 pm
Find the LCM of 2, 4, 6 and 8 to find the time of tolling.

$\begin{matrix} 2 & 2, 4, 6, 8 1, 2, 3, 4 \end{matrix}$

LCM $= 2 \times 2 \times 3 \times 2$ = 24
The bells will toll together at 1 : 24 pm

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Four bells commence tolling together at 1: 00 pm and toll at intervals of 2, 4, 6 and 8 minutes respectively. At what time will the bells toll together again?

The correct option is D 1 : 24 pmFind the LCM of 2, 4, 6 and 8 to find the time of tolling. 22,4,6,81,2,3,4 LCM =2×2×3×2 = 24 The bells will toll together at 1 : 24 pm

The correct option is D 1 : 24 pm
Find the LCM of 2, 4, 6 and 8 to find the time of tolling.

$\begin{matrix} 2 & 2, 4, 6, 8 1, 2, 3, 4 \end{matrix}$

LCM $= 2 \times 2 \times 3 \times 2$ = 24
The bells will toll together at 1 : 24 pm