Question

2. Perform cach of the following calculations using a single multiplication. Do not round your final answers.(a) Decrease 160 by 10% (b) Decrease 450 by 6%(c) Decrease 122,000 by 12%(d) Decrease $1,820 by 3%(c) Decrease $12,500 by 15%(f) Decrease $4.50 by 8%

Answer 1

We have the following:

(a) Decrease 160 by 10%

`160\cdot((100-10)/(100))=144`

(b) Decrease 450 by 6%

`450\cdot((100-6)/(100))=423`

(c) Decrease 122,000 by 12%

`122000\cdot((100-12)/(100))=107360`

(d) Decrease $1,820 by 3%

`\begin{gathered} 1820\cdot((100-3)/(100))=1765.4 \\ \end{gathered}`

(e) Decrease $12,500 by 15%

`12500\cdot((100-15)/(100))=10625`

(f) Decrease $4.50 by 8%

`4.5\cdot((100-8)/(100))=4.14`