A body starts from rest, what is the ratio of the distance

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A body starts from rest, what is the ratio of the distance travelled by the body during the 4th and 3rd seconds ?

1. 7/5
2. 5/7
3. 7/3
4. 3/7

Correct Option: A

D₄	=	0 + (a/2) × (2 × 4 - 1)	=	7
D₃	=	0 + (a/2) (2 × 3 - 1)	=	5