Desmond's maths exam is next week.
As part of his revision he attempted 31
questions on his least favourite topic of percentages.
He got 21 questions right on the first attempt.
Two days later he tried all 31 questions again
and this time got 29 correct.
What percentage of questions did he
get correct on his first attempt?
Highrise Building Society
Gold Account Silver Account
7.875% p.a 7.00% p.a
If L = MN, what is the percentage
increase in L if M increases by 15% and N increases by 20%?
An electrical shop buys a stereo from a wholesaler
for fx and increases its price by 35% to make a profit.
When the stereo doesn't sell,
the shop reduces its price by 20%.
If the stereo now sells, calculate the shop's overall percentage profit.
A couple bought their house 2 years ago for fy.
In the first year, house prices in their area rose by 10%.
In the second year, house prices in their area fell by 5%.
Calculate the percentage profit
they would make if they sold their house now.
Ooh... here's the 3rd type — finding the original value.
The bit most people get wrong is deciding whether the value given
represents more or less than 100% of the original —
so always check your answer makes sense.
In the new year sales Robin bought a tennis racket for £68.00.
The original price had been reduced by 15%.
What was the original price?
If the village continues to grow at the same rate,
how many whole years from today
will it be before the population
is more than twice its current size?