(b) 9 months
Because,
Given: – P = ₹ 8000, A = ₹ 8368, R = 6%
We Know That,
Amount = Principal (1+ ((Rate × time)/100))
= (8360/ 8000) = 1 + ((6 × t)/100)
= (8360/ 8000) -1 = ((6 × t)/100)
= t = [(8360 – 8000)/ 8000] × (100/6)
= (360/8000) × (100/6)
= (6/8) × 12 months
= 9 months