(a) Let the price / kg of tea of 1st kind be ₹ x. Then, price / kg of tea of 2nd kind = ₹ (x + 325) Now, quantity of two tea be 4a and a, respectively. Then, according to the question, [4a × x + a × (x + 325)] x
112
5
= (4a + a) 72 49x + a (x + 3.25) =
5a×72×100
112.5
4x + x + 3.25 =
5×72×100
112.5
5x +3.25 = 320 x =
320−325
5
316.75
5
=63.35 ∴ Price per kg of tea of 1st kind = ₹ 63.35