Language, notation and formulas
Language, notation and formulas

This free course is available to start right now. Review the full course description and key learning outcomes and create an account and enrol if you want a free statement of participation.

Free course

Language, notation and formulas

6.5.1 Another ‘making a lawn’ solution

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. [3]
(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? [4]
(c) If a piece of turf costs 50p, write down how much it will cost to turf the lawn. [3]
(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. [5]
(e) Which method is cheaper? Why might your friends choose the more expensive method? [3]

Sample Solution B to Example 18

Click on ‘Reveal answer’ to see the tutor's marking.

Answer

Tutor's comments on Sample Solution B

MU120_4M6

For further information, take a look at our frequently asked questions which may give you the support you need.

Have a question?
Free Courses

OpenLearn has over 800 free courses across all our subjects designed by our academic experts. From 1 to 100 hours, introductory to advanced, you can start learning at any time and all for free.