i) It would take Alex working alone 30 days, Bernard 40 days and Charles 60 days to complete a task. All three start working together but...

i) It would take Alex working alone 30 days, Bernard 40 days and Charles 60 days to complete a task. All three start
working together but after five days, Alex falls sick and cannot continue. Determine how many more days it will take
Bernard and Charles to complete the task.
ii) A dealer has three grades of coffee, A, B and C. Grade A costs sh. 140 per kg., grade B costs sh.16 per kg and grade C
cost sh. 256 per kg.
a) The dealer mixes grade A and B in the ratio 5:3 to make a brand of coffee which he sells at sh. 180 per kg. Calculate
the percentage profit he makes.
b) The dealer maker a new brand by mixing the three grades of coffee in three in the ratio A: B = 5:3 and B: C = 2:5.
Determine the selling price of the new brand if he has to make a 30% profit.

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sharon kalunda answered the question on May 6, 2019 at 14:24

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