Question

how many kilos of tea worth Rs.72 per kg should be mixed with 10 kg of tea worth Rs.90 per kg to produce which will cost Rs.78 per kg?

Answer 1

78×8=604 it is you answer 72×10=720 when we divided 90 then 720÷90=8 so the cost 78=78×8=604

Answer 2

Answer is in the attachment

Hope it helps !!