A price of £12.50 is increased by 20%. What is the new price?
20+100=120 120/100=1.2 1.2 x 12.50=£15
2 of 22
An item now priced at £12.00 carries a lablel “original priced reduced by 25%” what was the original price?
100-25= 75 75/100 x p=12 (p is the original price) P = 12 x 100/ 75= £16
3 of 22
The number of customers of an online store has increased by 12% since last year. If there were 850 customers last year, how many are there now?
100 +12=112 112/100=1.12 1.12 x 850= 952
4 of 22
The amount of non-recyclable waste produced by a factory has decreased by 30% compared with last year. This year 16 tonnes were produced. What was last years amount to 1 decimal place?
16/70 X 100 =22.85
5 of 22
An investment attracts 5% interest per year. If you invest £200 at the start of year 1, and interest is added on the last day of the year, how much money do you have at the end of year 1?
100 + 5 = 105 First year- 1.05 x 200= 210 Second year- 1.05 x 210= 220.50
6 of 22
A firm sells a product for £420 plus value added tax at 17.5 % How much does it cost to buy the product?
100+17.5= 117.5 117.5/100 x 420 = 493.50
7 of 22
A restaurant surveyed 12,000 customers. 4560 were male. What percentage were female?
12000-4560= 7440 7740/ 12000 x 100= 62%
8 of 22
Volkswagen sold 42,000 golfs in the first quarter of 2015. In the same period in 2016 it sold 47,000 golfs. Express the increase as a percentage to one decimal place.
47000-42000=5,000 5000/42000 x 100 =11.9%
9 of 22
In the first quarter of 2017 Volkswagen sold 41,000 golfs. Express the decrease over 2015 as a percentage
At the end of 2016 Volkswagen increased the price of the golf by 7%. The new price was £16,000. What was the original price?
100+7=107 107/100=1.07 P x 1.07=16,000 P= 16000/1.07= 14953.27
11 of 22
55% of Acers computer sales are laptops. Of these 20% are silver colour. Calculate how many sales are silver laptops.
0.20 x 0.55=11%
12 of 22
A book shop buys books for £5.00. the book shop adds a mark up of 40%. What price does the book shop sell books for?
100 +40= 140 140/100 =1.4 1.4 x 5=7
13 of 22
A fashion retailer is considering a 20% discount on all items priced at £30. What will the new price be?
100- 20%= 80% 80/100 x £30= £24
14 of 22
Express 1/5 as a percentage
Put it in the calculator= 0.2 Take off the decimal place- 20%
15 of 22
Express 0.673 as a fraction
673/1000
16 of 22
Express 16527 to two significant figures
16,000
17 of 22
Express 0.00345 to 2 significant figures
0.0035
18 of 22
What is a quarter of 0.08
0.8/4= 0.2
19 of 22
What is 3 quarters of 36
¾ x 36/1 = 27
20 of 22
A manufacturer has fixed weekly costs of £20000. The costs of selling one of their products is £5.00. if the firm makes a 1000 products what would the variables be?
1000 x 5= £5000
21 of 22
from the previous question- what would the equation be if Y=total costs and X is the number of products made in a week?
Y=2000 X 5X
22 of 22
Other cards in this set
Card 2
Front
A price of £12.50 is increased by 20%. What is the new price?
Back
20+100=120 120/100=1.2 1.2 x 12.50=£15
Card 3
Front
An item now priced at £12.00 carries a lablel “original priced reduced by 25%” what was the original price?
Back
Card 4
Front
The number of customers of an online store has increased by 12% since last year. If there were 850 customers last year, how many are there now?
Back
Card 5
Front
The amount of non-recyclable waste produced by a factory has decreased by 30% compared with last year. This year 16 tonnes were produced. What was last years amount to 1 decimal place?
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