a merchant blends two brands of tea costing 60 new pence per, Average and Mixtures, Mathematics (O-Level)

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Question:A merchant blends two brands of tea costing 60 new pence per kg an d80 new pence per kg in ratio 3:1. What is the cost of 1 kg of the mixture?

Answer Suppose he mixes 3 kg of 60p tea with 1 kg of 80p tea.
   Cost of 3 kg at 60p per kg is       180 new pence
   Cost of 1 kg at 80p per kg is         80 new pence
   Total cost of 4 kg of tea is         260 new pence
Average cost per kg is 65 new pence.

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A merchant blends two brands of tea costing 60 new pence per kg an d80 new pence per kg in ratio 3:1. What is the cost of 1 kg of the mixture?

Question:A merchant blends two brands of tea costing 60 new pence per kg an d80 new pence per kg in ratio 3:1. What is the cost of 1 kg of the mixture?

Answer Suppose he mixes 3 kg of 60p tea with 1 kg of 80p tea. Cost of 3 kg at 60p per kg is 180 new pence Cost of 1 kg at 80p per kg is 80 new pence Total cost of 4 kg of tea is 260 new pence Average cost per kg is 65 new pence.