Question

Find each percent increase. round to the nearest percent

2. From 20 students to 30 students

4. From $3.49 to $3.89

6. From 5 miles to 16 miles

Find each percent decrease. round to the nearest percent

8. From $80 to $64

10. From 90 points to 45 points

12. From 64 photos to 21 photos

Answer 1

2.

p/100 = (30-20)/20;

p/100 = 10/20;

p/100 = 1/2;

p = 50;

p% = 50% (percent increase);

In the same way,

4.
p% = 11.46% round to 11%;

6.
p% = 220%;

____________

8.

p/100 = (80-64)/80;

p/100 = 16/80;

p/100 = 1/5;

p = 100/5;

p = 20;

p% = 20% (percent descrease);

In the same way,

10.
50%;

12.
67.18% round to 67%;