# Flowchart Bills - Selling Eggs

## Calculate bill totals by following the instructions given in the form of a flow chart.

##### Level 1Level 2Level 3DescriptionInvestigationMore Money Maths

This is level 2; Selling Eggs You can earn a trophy if you get at least 7 correct.

You have started a new job preparing bills and the boss has sketched this flow chart to show how the totals are arrived at. Calculate the cost of the items on the right:

 10 eggs £ 21 eggs £ 44 eggs £ 154 eggs £ 1 dozen eggs £ 2 dozen eggs £ 3 dozen eggs £ 5 dozen eggs £ 11½ dozen eggs £ 18½ dozen eggs £
Check

This is level 2. You can also try:
Level 1 Level 3

## Instructions

Try your best to answer the questions above. Type your answers into the boxes provided leaving no spaces. As you work through the exercise regularly click the "check" button. If you have any wrong answers, do your best to do corrections but if there is anything you don't understand, please ask your teacher for help.

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## Teachers

If you found this activity useful don't forget to record it in your scheme of work or learning management system. The short URL, ready to be copied and pasted, is as follows:

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## Description of Levels

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### Level 1 - Selling Textbooks

The more textbooks a customer buys the cheaper the unit price. The task at this level is to calculate the cost of buying different numbers of textbooks using the flow chart for guidance.

### Level 2 - Selling Eggs

Similarly buying eggs in bulk is cheaper (per egg) than buying a smaller number of eggs. Traditionally eggs have been sold by the dozen. A dozen is 12.

### Level 3 - Calculating Gas Bills

Paying for gas and electricity usually includes a standing charge and a staged set of charges per unit. The amount of gas is measured in therms.

### Investigation

Try many different starting numbers in the given flowchart. Which starting numbers reach one the fastest? Why?

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