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...family estate. He proposes to leave one divided by two of the estate to his son, one divided by three to his daughter and one divided by six to his brother. Who gets the biggest share? Who gets the smallest share? Method When numerators of fractions are all 1, the larger the denominator of the fraction, the smaller the fraction. Looking at the example above, the fractions...

...history, S01 E03 9pm, 4 February 2010 © BBC 1.2.6 Myths of radiation video © courtesy Museum of Quackery, May 2007 1.3.6 The early days of fission © The Open University and its licensors Every effort has been made to contact copyright owners. If any have been inadvertently overlooked, the publishers will be pleased to make the necessary arrangements at the first...

...family income. 75% of the women were in paid work; 90% of the men were in paid work; 18% of the couples had a joint income of less than £160 per week. (a) How many women were in paid work? (b) How many men were in paid work? (c) How many couples had a joint income of less than £160 per week? Answer (a) 75% of 840 = 0.75 × 840 = 630, so 630 women were in paid work. (b)...

...family of compounds called alcohols, all of which have an —OH group attached to a hydrocarbon chain that is often depicted simply by the symbol R. Table 1: The structures of the main functional groups...Pain and aspirin: 4.3 Aspirin - Question 1 Compare the structure of aspirin, 2.8, with that of salicylic acid, 2.7. What similarities and differences can you see?...