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4 A CNC machine centre costs 100,000. Its value depreciates at X% per annum. (a) What will be its value after Y years? (b) How long will it take to have a value of 50,000? Q4 Y 2 2 2 2 2 2 2 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 1.0 1.1 1.2 1.3 2 2 2 2 3 3 3 3 3 3 3 3 3 1.4 1.5 1.6 1.7 1.8 4 A CNC machine centre costs 100,000. Its value depreciates at X% per annum. (a) What will be its value after Y years? (b) How long will it take to have a value of 50,000? Q4 Y 2 2 2 2 2 2 2 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 1.0 1.1 1.2 1.3 2 2 2 2 3 3 3 3 3 3 3 3 3 1.4 1.5 1.6 1.7 1.8