5a
Step 1: Divide 18 by 60
18/60=0.3
Step 2: Convert answer from step 1 to percent
0.3=30%
30% of students prefer sugar cookies.
5b
Step 1: Add up amount of students that like peanut butter or chocolate chip cookie
21+12=33
Step 2: Divide by 60
33/60=0.55
Step 3: Convert to percent
0.55=55%
55% of students like chocolate chip or peanut butter cookies.
5c
Step 1: Multiply percent of students that like sugar cookies by 500
30%x500=150
The band should order 150 tubs of sugar cookie dough.
6a
Step 1: Divide 25 by 75
25/75=0.33333......
Step 2: Convert into percent
0.333333....=33.33333....%
About 33.33% of students send 51-75 text messages each day.
6b
Step 1: Add up amounts of students that send under 50 text messages a day
4+14=18
Step 2: Divide the answer by 75
18/75=0.24
Step 3: Convert to percent
0.24=24%
24% of students send no more than 50 text messages a day.
6c
Step 1: Find percentage of students that send at least 76 messages a day
32/75=0.42666666....
0.4266666....=42.66666....%
Step 2: Multiply percent of students that send at least 76 messages by 450
42.6666....%x450=192
At least 192 students would send at least 76 messages a day.
