a) Find A^-1, the inverse of matrix A = b) Ibanda sells white and brown loaves of bread in his kiosk. On a certain day he...

      

a) Find A^-1, the inverse of matrix A =
b) Ibanda sells white and brown loaves of bread in his kiosk. On a certain day he sold 6 white loaves of bread and 5 brown ones for a total of Kshs. 520. The next day he sold 4 white loaves and 7 brown ones for a total of Kshs. 530.
i. Form a matrix equation to represent the above information.
ii. Use matrix method to find the price of a white loaf of bread and that of a brown loaf of bread.
c) A school canteen bought 240 white loaves of bread and 100 brown loaves of bread. A discount of 10% was allowed on each white loaf whereas a discount of 13% was allowed on each brown loaf of bread. Calculate the percentage discount on the cost of all the loaves of bread bought.

  

Answers

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% discount = (15 800 – 14070) / 15800
= 10.94936709
= 10.95%

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Kavungya answered the question on November 13, 2019 at 11:12

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