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%

$160\cdot(\frac{100-10}{100})=144$

(b) Decrease 450 by 6%

$450\cdot(\frac{100-6}{100})=423$

(c) Decrease 122,000 by 12%

$122000\cdot(\frac{100-12}{100})=107360$

(d) Decrease $1,820 by 3%

$\begin{gathered} 1820\cdot(\frac{100-3}{100})=1765.4 \\ \end{gathered}$

(e) Decrease $12,500 by 15%

$12500\cdot(\frac{100-15}{100})=10625$

(f) Decrease $4.50 by 8%

$4.5\cdot(\frac{100-8}{100})=4.14$