This graph shows the cost of buying potatoes from a farm - OCR - GCSE Maths - Question 5 - 2018 - Paper 2
Question 5
This graph shows the cost of buying potatoes from a farm.
(a)(i) How much does it cost to buy 70kg of potatoes?
(a)(ii) What weight of potatoes can be bought for £... show full transcript
Worked Solution & Example Answer:This graph shows the cost of buying potatoes from a farm - OCR - GCSE Maths - Question 5 - 2018 - Paper 2
Step 1
How much does it cost to buy 70kg of potatoes?
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
To find the cost of 70kg of potatoes, we look at the graph provided. The cost for 70kg corresponds to £28 on the vertical axis. Therefore, the cost is £28.
Step 2
What weight of potatoes can be bought for £38?
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
To determine the weight of potatoes that can be bought for £38, we can use the graph again. The cost of £38 corresponds to 95kg on the horizontal axis. Thus, you can buy 95kg of potatoes for £38.
Step 3
How much will it cost to buy 180kg of potatoes from the farm?
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The cost per kilogram of potatoes can be calculated from the earlier question. Since 70kg costs £28, we calculate the cost per kg:
Cost per kg = ( \frac{28}{70} = 0.40 )
For 180kg, the total cost can be calculated as follows:
Total cost = ( 0.40 \times 180 = £72 )
Therefore, it will cost £72 to buy 180kg of potatoes.
