How many kilograms of tea worth Rs.72/ kg should be mixed with 10 kg of tea worth Rs.90/kg to produce a mixture that will cost Rs. 78/ kg.?
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Given Tea with 10kg costs 90rs ---- (i)
Assume Tea with 72kg as a ----- (ii)
Given (i) and (ii) as 78kg i.e 10 + a
90 * 10 + 72a = 78(10+a)
72a - 78a = 780 - 900
a = -120/-6
= 20
Assume Tea with 72kg as a ----- (ii)
Given (i) and (ii) as 78kg i.e 10 + a
90 * 10 + 72a = 78(10+a)
72a - 78a = 780 - 900
a = -120/-6
= 20
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