A) 1.25 kg | B) 1 kg |

C) 1.5 kg | D) None of these |

Explanation:

Let the initial amount of honey in the jar was k, then

$512=k{\left(1-\frac{1}{5}\right)}^{4}or512=k{\left(\frac{4}{5}\right)}^{4}$

=> $k=\frac{512\times 625}{256}$

=> k = 1250

Hence initially the honey in the jar = 1.25 kg

A) 81.92L | B) 96L |

C) 118.08L | D) None of these |

Explanation:

The amount of petrol left after 4 operations

= $200\times {\left(1-\frac{40}{200}\right)}^{4}$

= $200\times {\left(\frac{4}{5}\right)}^{4}$

= $200\times \left(\frac{256}{625}\right)$

= 81.92 litres

Hence the amount of kerosene = 200 - 81.92 = 118. 08 litres

A) 20% | B) 25% |

C) 33.33% | D) 18% |

Explanation:

When the water is freely available and all the water is sold at the price of the milk, then the water gives the profit on the cost of 20 litres of milk.

Since, the profit % = $\frac{Profit}{CostPrice}x100$

Therefore, profit percentage = $\frac{5}{20}x100$ = 25%

User defined functions can be created into the Microsoft spreadsheet. Spreadsheets can be customized according to the user needs by using VB applications. To create visual basic functions useful for spreadsheet you need to click Tools and select Macros where you will need to click on Visual basic editor.