Three persons walk from place A to place B. Their speeds

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Three persons walk from place A to place B. Their speeds are in the ratio 4 :3 : 5. The ratio of the time taken by them to reach B will be :

1. 10 : 15 : 13
2. 2 : 3 : 4
3. 15 : 20 : 12
4. 16 : 18 : 15

Correct Option: C

Time taken is inversely proportional to relevant speeds.

∴ Required ratio =	1	:	1	:	1
	4		3		5

=	1	× 60 :	1	× 60 :	1	× 60
	4		3		5

= 15 : 20 : 12