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A man pays £149.50 in a sale for a DVD player which is labelled ‘35% off’. What was the original price of the DVD player?
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Electrical Engineering
A couple buys a flat and make an 18% profit by selling it 3 years later for £153 400. Calculate the original cost of the house
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Electrical Engineering
An electrical store makes 40% profit on each widescreen television it sells. If the selling price of a 32 inch HD television is £630, what was the cost to the dealer?
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Electrical Engineering
£3600 is placed in an ISA account which pays 6.25% interest per annum. How much is the investment worth after 1 year?
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Electrical Engineering
The price of a fully installed combination condensing boiler is increased by 6.5%. It originally cost £2400. What is the new price?
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Electrical Engineering
The price of a fully installed combination condensing boiler is increased by 6.5%. It originally cost £2400. What is the new price?
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Electrical Engineering
The current, I amperes, in an a.c. circuit is given by I = v/((R^2+X^2)) Evaluate the current correct to 2 decimal places; when v= 250v, R = 25.0 Q and X = 18.0 Q
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Electrical Engineering
Wave Amplitude Calculate the displacement amplitude of a 1000 Hz sound wave whose pressure amplitude is100.0 μPa.
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Electrical Engineering
