## mikaa_toxica13 Group Title tell whether each percent change is an increase or decrease. Then find the percent change. Round to the nearest percent. original amount: 45 new amount: 60 one year ago one year ago

1. AravindG

2. mikaa_toxica13

None. My teacher hasn't taught me this yet. I know it's an increase though.

3. Hero

$\%\Delta = \frac{|a - b|}{a} \times 100$ $$\%\Delta =$$ Percent Change $$a =$$ Old Amount $$b =$$ New amount

4. mikaa_toxica13

Ook Can u use the actual numbers in that ?

5. Hero

Yes, that's what you're supposed to do. In this case: $$a = 45$$ $$b = 60$$

6. mikaa_toxica13

Thank u. It's hard for me to understand this stuff. ok so it would be x = 45−60 ==== ×100 45 45 - 60 = -15 15 == = 3 45 3(100) = 300

7. Hero

$\frac{15}{45} = \frac{1}{3}$

8. mikaa_toxica13

ok so 1/3(100) = 33

9. Hero

Correct.

10. mikaa_toxica13

Thank u !