2) CONTRIBUTION OF PROFIT
Contribution = Sales * P/V Ratio
= 50,00,000 * 50/100
= Rs.25,00,000
Net Profit = Contribution –Fixed Cost
= 25,00,000 –15,00,000
= Rs. 10,00,000
3) EFFECTIVE OF DECREASE IN LABOUR EFFICIENCY BY 5%
Variable cost = Sales –Contribution
= 50,00,000 –25,00,000
= Rs. 25,00,000
Labour cost = 25,00,000 * 25/100
= Rs. 6,25,000
New labour cost when labour efficiency decreases by 5%
= 6,25,000 * 100/95
= Rs. 6,57,895
Increase in labour cost= 6,57,895 –6,25,000
= Rs. 32,895
New variable cost = 25,00,000 –32,895
= Rs. 25,32,895