6.5 Solutions to ‘making a lawn’
Learning from the marking of the previous questions, write out a good solution to the following problem.
Example 18: Making a lawn
Suppose you have some friends who are planning to put a new lawn in their garden. The lawn is to be 12 m by 14 m and they have a choice of either laying turf or sowing grass seed. You have been asked to help them decide between the two.
|(a) Write down the area of the lawn.|||
|(b) The turf they can lay is sold in pieces, each of which is a square of grass measuring ½ m by ½ m. How many pieces of turf are needed to cover the lawn?|||
|(c) If a piece of turf costs 50p, write down how much it will cost to turf the lawn.|||
|(d) Grass seed is sold in boxes. Each box contains enough seed for 10 m2, and costs £5.15. Find the cost of sowing seed.|||
|(e) Which method is cheaper? Why might your friends choose the more expensive method?|||
Now look at the sample solutions and mark them as if you were the tutor. Finally, use the tutor's comments to assess your own solution and comments.