пятница, 6 июля 2018 г.

Test. Electricity, gas and water

Before proceeding to the solution of examples and problems be sure to read the theoretical part of the lesson 

Electricity, gas and water

 1. Nerys has received his electricity bill:
present reading = 53164 
previous reading – 51083
cost of one unit of electricity = 9.3 p.
Copy and complete the bill below:
units used = present – previous  =
 а£205.21;      
 b)  £203.21;     
 c£201.21;      
 d£203.41.

 2. Work out the cost of each electricity bill below. VAT is payable at 5% each time.
present reading = 81659
previous reading = 80292
cost of one unit of electricity = 8.3 p

 а£122.13;      
 b£115.13;     
 c)  £119.13;      
 d£119.19.

 3. Work out the cost of each electricity bill below. VAT is payable at 5% each time.
present reading = 23748
previous reading = 22095
cost of one unit of electricity = 7.6 p

 а)  £131.91;      
 b£129.91;     
 c£135.91;      
 d£131.97.

 4. Work out the cost of each electricity bill below. VAT is payable at 5% each time.
present reading = 5186
previous reading = 4417
cost of one unit of electricity = 7.6 p

 а£57.37;      
 b£65.37;     
 c£61.31;      
 d)  £61.37.

 5. Work out the cost of each electricity bill below. VAT is payable at 5% each time.
present reading = 63746
previous reading = 62640
cost of one unit of electricity = 9.4 p

 а£111.16;      
 b)  £109.16;     
 c£105.16;      
 d£109.22.

 6. Work out the cost of each electricity bill below. VAT is payable at 5% each time.
present reading = 9187
previous reading = 8089
cost of one unit of electricity = 8.2 p

 а£96.54;      
 b£92.54;     
 c£94.58;      
 d)  £94.54.

 7. Work out the cost of each electricity bill below. VAT is payable at 5% each time.
present reading = 5613
previous reading = 4688
cost of one unit of electricity = 11.4 p

 а)  £110.72;      
 b£108.72;     
 c£112.72;      
 d£110.78.

 8. Work out the cost of each electricity bill below. VAT is payable at 5% each time.
present reading = 71248
previous reading = 69325
cost of one unit of electricity = 7.9 p

 а£156.51;      
 b£162.51;     
 c)  £159.51;      
 d£159.55.

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