3 4 5 A shop sells material for bridesmaid dresses at £4 per metre. Is the price of material proportional to the length bought? Answer Q1a and Q1b for the graph you have drawn. Q3 strategy hint Make a table of values and draw a graph. The ratio of kilograms to pounds is 1 : 2.2. Write a formula that shows the relationship between kilograms ( k) and pounds ( p). Cost (£) Unit 11 Ratio and proportion O Length (m) Q4 strategy hint Make a table of values. kilograms 0 1 pounds 0 2.2 k = It takes 3 people 4 hours to lay some pipes. Copy and complete the table. Number of people Longer or shorter? Hours 3 — 4 1 2 2 3 ϫ × p Q5 strategy hint If longer, then multiply. If shorter, then divide. 6 6 Reasoning It takes 4 washing machines 12 hours to wash the hotel laundry. How long will it take 6 machines? Q6 hint Draw a table like the one in Q5. 11 Extend 1 Real / Reasoning Barry uses 50 g of lawn seed per square metre. He needs to seed a rectangular lawn that is 8 m by 14 m. He has a 5 kg bag of lawn seed. Does he have enough seed for the lawn? 2 Real / Problem-solving Freda is planning a trip for her gymnasts. The recommended adult-to-child ratios are • Age 4 to 8 – a minimum of 1 adult for every 6 children • Age 9 to 12 – a minimum of 1 adult for every 8 children • Age 13 to 18 – a minimum of 1 adult for every 10 children Here are the ages of the gymnasts. Age Number of gymnasts 5 or 6 18 7 or 8 12 10 or 11 13 12 3 14 and over 23 Work out the minimum number of adults that need to go on the trip. 338