In the production of fans three types of costs are involved. Cost of raw material, expenditure on labour and miscellaneous costs. Ratio of expenditure on these cost in one year is 4 : 3 : 3. In the next year cost of raw material increased by 10%, expenditure on labour increased by 6% and miscellaneous expenditure decreased by 5%. Find the percentage rise in the cost of fan.

In the production of fans three types of costs are involved. Cost of raw material, expenditure on labour and miscellaneous costs. Ratio of expenditure on these cost in one year is 4 : 3 : 3. In the next year cost of raw material increased by 10%, expenditure on labour increased by 6% and miscellaneous expenditure decreased by 5%. Find the percentage rise in the cost of fan.
1). 6.3%
2). 8.1%
3). 4.3%
4). 4%

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