1) packet contains 750 grams plus 20% extra cereal.
750 grams is 100%. Add 20% = 120%
750 grams * 120% = 900 grams total.
2) Jenny's salary 27,500. Salary increased by 3%.
27,500 is 100%. Add 3% increase = 103%
27,500 x 103% = 28,325 new salary
3) Old ticket price 77. Price increased by 11%
77 is 100%. Add 11% increase = 111%
77 x 111% = 85.47 new ticket price
4) Original price 795. Price reduction 12%
795 is 100%. Deduct 12% reduction = 88%
795 x 88% = 699.60 new price
5) Car battery cost 58. plus VAT at 17 1/2%
58 is 100%. Add 17 1/2 % = 117 1/2%
58 x 117 1/2% = 68.15 Total bill
6) telephone bill 66. plus VAT at 17 1/2%
66 is 100%. Add 17 1/2 %
66 x 117 1/2% = 77.55 total bill
7) Lisa investment 3500. Interest rate 3.5%. term 1 year.
S.I. = 3,500 x 3.5% x 1year
S.I. = 122.50 interest for the year
Total amount at year-end = 3500 + 122.50 = 3,622.50
8) Principal = 2500, interest rate = 4% , term = 3 years.
Needed total value after one year.
S.I. = 2500 x 4% x 1 year
S.I. = 100 interest for the year.
Total value after one year = 2500 + 100 = 2600
9) Value of car = 9000, depreciation rate = 10%
9000 is 100%, less depreciation 10% = 90%
9000 x 90% = 8100 end of year value
10) normal price 1.85. reduced by 25%
1.85 is 100% less 25% = 75%
1.85 x 75% = 1.3875 rounded to 1.39
11) Normal price is 100%, reduced by 15%. Sales price is 85%
a) drill: 60 x 85% = 51.00
b) lawnmower: 190 x 85% = 161.50
c) tin of paint: 12 x 85% = 10.20