Unit 2 Percents

Unit 2 Percents Revision

Revision 2

Multiple Choice

• 49

• -12

• 12

• -49

Multiple Choice

• 80%

• 60%

• 70%

• 85%

Multiple Choice

• 30

• 40

• 10

• 28

Multiple Choice

• x= 18

• x= 10

Multiple Choice

• percent of change=amount of change / original price = $\frac{150-200}{200}=-0.2=-0.2\cdot100\$ $=-20\%\ or\ 20\%\ decrease$

• percent of change=amount of change / original price = $\frac{200-150}{200}=0.2=0.2\cdot100$ $=20\%\ or\ 20\%\ increase$

Multiple Choice

• I=prtSimple interest = principle $\times$ interest rate as decimal $\times$ time in years $800\times0.04\ \times5\ =160\ AED$

• I=prt
  Simple interest = principle $\times$ interest rate as decimal $\times$ time in years
  $800\times4\ \times5\ =16000\ AED$