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

If 20% of sale of D₁ is transferred on D₂ and 25% of sale of D₆ is transferred on D₄ then ratio of sale on D₂ and D₄ is:

310 : 319

20% of sale on D₁ ⇒ 20% of 5000 = 1000

Now; total sale of D₂ ⇒ 5200 + 1000 = 6200

25% of sale on D₆ ⇒ 25% of 5040 = 1260

Now; total sale of D₄ ⇒ 5120 + 1260 = 6380

Req. Ratio = 6200 : 6380 = 620 : 638 = 310 : 319