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7. a) A blend of coffee is made by mixing Coffee A with Coffee B in the ratio 3: 2. Coffee A costs €12 per kg and Coffee B costs €15 per kg. 1) Calculate the cost of 500 g of this blend of coffee. iI) Calculate the price of 1 kg of this blend of coffee if It is sold at a profit of 20 %, b) In a primary class, = of the children are girls. of the boys play tennis. None of the girls play tennis. What fraction of the children in this class play tennis?

7. a) A blend of coffee is made by mixing Coffee A with Coffee B in the ratio 3: 2. Coffee A costs €12 per kg and Coffee B costs €15 per kg. 1) Calculate the cost of 500 g of this blend of coffee. iI) Calculate the price of 1 kg of this blend of coffee if It is sold at a profit of 20 %, b) In a primary class, = of the children are girls. of the boys play tennis. None of the girls play tennis. What fraction of the children in this class play tennis?

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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7. a) A blend of coffee is made by mixing Coffee A with Coffee B in the ratio 3: 2. Coffee A costs €12 per kg and Coffee B costs €15 per kg. i) Calculate the cost of 500 g of this blend of coffee. iI) Calculate the price of 1 kg of this blend of coffee if It is sold at a profit of 20 %, b) In a primary class, – of the children are girls. of the boys play tennis. None of the girls play tennis. What fraction of the children in this class play tennis?
Transcribed Image Text:7. a) A blend of coffee is made by mixing Coffee A with Coffee B in the ratio 3: 2. Coffee A costs €12 per kg and Coffee B costs €15 per kg. i) Calculate the cost of 500 g of this blend of coffee. iI) Calculate the price of 1 kg of this blend of coffee if It is sold at a profit of 20 %, b) In a primary class, – of the children are girls. of the boys play tennis. None of the girls play tennis. What fraction of the children in this class play tennis?
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