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 Form 4 Mathematics Paper 1 Exam Revision Questions With Answers

The cost of manufacturing a radio is divided into the cost of materials, labour, overheads, and advertising in the ratio 6: 3: 2:1. During a certain year the cost of materials increased by 40%, the cost of labour increased by 15%, overheads decreased by 12% while advertising remained the same. Calculate to one decimal place the percentage increase in the total cost of manufacturing the radio.

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