The price of sugar is increased by 25%, now Harry can purchase 13 kg less sugar for Rs.780. Find original price of sugar.

Rs.20

20% = $\frac{1}{5}$

ATQ,

             Actual       :       New

Price          4          :         3

Cons.         3          :         4

Diff. of consumption ⇒ 1 Units = 13 Kg. (given)

Actual consumption = 3 units = 3 × 13 = 39 kg

Original Price = \frac{780}{39}\) = Rs.20