80% of 6-graders and 20% of 5-graders went on a - id8062054695317, mrwiggles675

Ответ:

williamsa24mr238org

16.01.2022

32% of students went on this field trip.

Step-by-step 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. $=\frac{80}{100}\times A$

$=\frac{80}{100}\times 20$

=16

20% of 5-graders going on trip

i.e. $\frac{20}{100}\times B$

$=\frac{20}{100}\times 80$

=16

Total number of students going on the field trip is

$T=\frac{\frac{80}{100}\times A+\frac{20}{100}\times B}{20+80}$

$T=\frac{16+16}{100}$

$T=\frac{32}{100}$

32 students out of 100 students.

Into percentage,

$T\%=\frac{32}{100}\times 100=32\%$

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

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