\(\$120\) is increased by \(25\%\) and then decreased by \(25\%\). What is the new amount?
Answer
\(\$112.50\)
Worked Solution
Question 2
15285
Increase 70 m by 42%
Answer
\(99.4~\text{m}\)
Worked Solution
Question 3
15287
What is the new amount paid if $856.22 is increased by 8%?
Answer
\(\$924.72\)
Worked Solution
Question 4
15288
Decrease 9.5 L by 35%
Answer
\(6.175~\text{L}\)
Worked Solution
Question 5
15289
Decrease 8 tonnes by 22%
Answer
\(6240~\text{Kg}\)
Worked Solution
Question 6
15291
Increase 60 g by 125%
Answer
\(135~\text{g}\)
Worked Solution
Question 7
15299
Andrew can run 200 m in 23.6 seconds. He wants to decrease his time by 11%. What time is he aiming for?
Answer
\(\text{21 seconds}\)
Worked Solution
Question 8
14659
Samantha buys a bike for \({\rm{\$ 3100}}\) and sells it a year later, making a \({\rm{16\% }}\) profit.
a) How much profit did she make? b) What was the selling price of the bike?
Answer
\(a) ~ \$ 496\,\,\,b) ~ \$ 3596\)
Worked Solution
Question 9
14661
Olivia bought a house for \({\rm{ \$ 496000}}\) and sold it \({\rm{10}}\) years later, making a \({\rm{142\% }}\) profit. Calculate the selling price of the house.
Answer
\(\$ 1200320\)
Worked Solution
Question 10
14665
Ian's weekly pay of \({\rm{\$ 990 }}\) increased by \({\rm{5}}{\rm{.5\% }}{\rm{. }}\) What is his new pay?
Answer
\(\$ 1044.45\)
Worked Solution
Question 11
14673
If a number is decreased by \(30\%\) to give us \(357\), what was the original number?
Answer
\(510\)
Worked Solution
Question 12
14668
Winter coats priced at \($830\) were reduced by \(15\%\) at the end of season sale. During the last weekend of the sale, they were further reduced by \(40\%\) off the discounted price. What was the final price of a coat?
