Fractions And Percentages Worksheet Page 10
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28MEP Pupil Text 11
Solution
Writing 8.21% as a decimal gives 0.0821.
=
×
8.21% of £486.27
0 0821
.
£
486 27
.
= £ .
39 92
(to the nearest penny)
So the account now contains
+
=
£
486 27
.
£ .
39 92
£
526 19
.
.
Worked Example 3
The cost of a large load of concrete blocks is £288 plus VAT at 17.5%. Find the total cost
of the concrete blocks.
Solution
The problem can be solved in one stage by finding 117.5% of £288. This will give the
original amount plus the VAT.
Note that 117.5% is 1.175 as a decimal.
So
=
×
117.5% of £288
1 175
.
£
288
= £
338 40
.
.
The total price is £338.40.
Worked Example 4
Jessica's salary of £12 000 is to be increased by 2.5%. Find her new salary.
Solution
Her new salary is 102.5% of her old salary.
=
×
102.5% of £12 000
1 025
.
£
12 000
= £12 300
.
Her new salary is £12 300.
Worked Example 5
A new car costs £9995, but a special offer gives an 8.5% discount. Find the discount
price of the car.
Solution
With an 8.5% discount, 91.5% of the original price must be paid.
So
=
×
91.5% of £9995
0 915
.
£
9995
= £
9145 43
.
(to the nearest penny)
The discounted price is £9145.43.
243
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