Question

80% of 6-graders and 20% of 5-graders went on a field trip. If there are 20 6-graders and 80 5-graders, what percent of students went on this field trip?

Answer 1

16 6th graders went on the field trip and 16 5th graders went on the field trip so that makes 32 students all together which means 32% of the students went on the field trip

Answer 2

32% of students went on this field trip.

Explanation:

Given : 80% of 6-graders and 20% of 5-graders went on a field trip. If there are 20 6-graders and 80 5-graders.

To find : What percent of students went on this field trip?

Solution :

Let A be the 6-graders students.

B be the 5-graders students.

We have given, A=20 and B = 60

According to question,

80% of 6-graders going on trip

i.e.
`=(80)/(100)* A`

`=(80)/(100)* 20`

`=16`

20% of 5-graders going on trip

i.e.
`(20)/(100)* B`

`=(20)/(100)* 80`

`=16`

Total number of students going on the field trip is

`T=((80)/(100)* A+(20)/(100)* B)/(20+80)`

`T=(16+16)/(100)`

`T=(32)/(100)`

32 students out of 100 students.

Into percentage,

`T\%=(32)/(100)* 100=32\%`

Therefore, 32% of students went on this field trip.