Given, chaiwala can buy 2 kg extra with 15% discount.
⇒ Let us assume chaiwala purchase y kg tea.
And price of a tea per kg = Rs.x
⇒ Discount 15% per kg = x - 15/100 x x
= (100x - 15x)/100
= 85x/100
The amount spent by him for purchasing tea leaves is 45 Without discount he can buy xy = 45 ……eq 1
And (85x/100)(y + 2) = 45 ……eq 2
Solving above two equations we get,
⇒ x = 3.97 per kg
Hence, original price = 3.97 per kg
∴ price reduced = 85/100 x 3.97
= 3.374
Approximately 3.38 per kg
Hence, Reduced price is 3.38 per kg.