Video: AQA GCSE Mathematics Foundation Tier Pack 3 • Paper 3 • Question 14

During the summer, Zoe runs a candy floss stall at the carnival. The table shows the number of sales Zoe makes for each month that she works. a) In which month did Zoe make the most candy floss sales. You must show your working. b) Next year, Zoe decides to run a promotion to boost sales once per month. She plans to sell special “blue wisp” candy floss in the week with the lowest sales. During which week should Zoe sell the special “blue wisp” candy floss? Circle your answer. [A] Week 1 [B] Week 2 [C] Week 3 [D] Week 4

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Video Transcript

During the summer, Zoe runs a candy floss stall at the carnival. The table shows the number of sales Zoe makes for each month that she works. Part a) In which month did Zoe make the most candy floss sales. You must show your working.

There’s also a part b) that I’ll come onto in a bit. So in part a), we want to find out in which month Zoe makes the most candy floss sales. So what we need to do is work out the total number of sales for each of the months June, July, and August. So if we want to work out the total number of sales in June, we’re gonna add up the sales from each of the weeks one, two, three, and four. So we got 25 add 23 add 41 add 30. Or you can use a calculator to add these up. When you do that, you get 119. If you want to do it mentally, we could add the tens. So we’d have two, two, four, and three which is 11. So we get 110. Add the units five, three, one, zero which gives us nine. Added together, you get 119.

And then, for July, if we wanna find the total, we’ve got week one, week two, week three, and week four. So it’s 18 plus 51 plus 26 plus 21. Again, we can just add this using a calculator. So we get 116. But we could also use the mental method as before. So we’ve got one plus five which is six, seven, eight, nine, 10. So 10 tens that’s 100. Then, we got eight add one add six add one which is 16. So we add these together and we get 116.

And then, finally, we’ve got August which is 27 add 28 add 20 add 12. And when we add these together, we get 87. So great, we’ve now worked out the total for each of our months. Well, if we compare them, we can see that the highest value is 119. So therefore, we can say that the month in which Zoe made the most candy floss sales is June. And we’ve shown our working cause we’ve shown how we calculated the total sales for June which was 119, July which was 116, and August which was 87. And June was the highest value or the most number of sales.

So for part b), It says that “Next year, Zoe decides to run a promotion to boost sales once per month. She plans to sell special “blue wisp” candy floss in the week with the lowest sales. During which week should Zoe sell the special “blue wisp” candy floss? Circle your answer. The options are week one, week two, week three, or week four.”

So what we need to do in this question is find out the total number of sales for each of our weeks. So if we find the total for week one, it’s gonna be 25 because that’s week one in June, 18 cause that’s week one in July, and 27 cause that’s week one in August. If we add those together, again do it on the calculator, we get 70. Or we could do the tens, two plus one plus two which is five, so we got 50, and then the units, five add eight is 13 add seven is 20. Add these together, we get 70. Then, week two is 23 add 51 add 28 which gives us 102. Week three is equal to 41 add 26 add 20 which is 87. And then, finally, for week four, we’ve got 30 add 21 add 12 which gives us a total of 63.

And then, if you remember what the question says, well the question says that she plans to sell the special blue wisp candy floss in the week with the lowest sales. So therefore, which week has the lowest sales? Well, the week with the lowest sales is week four. So therefore, Zoe should sell the special blue wisp candy floss in week four.

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