The line chart given below shows the liters of oil being sold in 6 days in a stake.

Ratio of oil sold in first 3 days to the last 3 days is?

1515 : 1513

Oil sold in first 3 days = D₁ + D₂ + D₃ = 5000 + 5200 + 4950 = 15150

Oil sold in last 3 days = D₄ + D₅ + D₆  = 5120 + 4970 + 5040 = 15130

Ratio required ⇒ (D₁ + D₂ + D₃) : (D₄ + D₅ + D₆)

                                15150       :        15130

                                  1515       :        1513