Question

The 300 students at Holmes school work a total of 5000 hour each month. Each student in group a work 10 hour each in group b work 15 hours and each in group c work 20 hour each month. There are twice as many students in group b as in group a. Which equation would not include in system used to solve this problem?Mark only one oval A=2b10a+15b+20c=5000A+b+c=300B=2a

Answer 1

Given

The 300 students at Holmes school work a total of 5000 hour each month.

Each student in group A work 10 hours, each in group B work 15 hours and each in group C work 20 hours each month.

There are twice as many students in group B as in group A.

To find: Which equation would not include in system used to solve this problem?

Step-by-step explanation:

It is given that,

The number of students in the Holmes school is 300.

And, the number of students is divided into 3 groups A, B and C respectively.

That implies,

`A+B+C=300`

Also, the total number of working hours is 5000.

Each student in group A work 10 hours.

Each student in group B work 15 hours.

Each student in group C work 20 hours.

That implies,

`10A+15B+20C=5000`

There are twice as many students in group B as in group A.

That implies,

`B=2A`

Hence, the equation A=2B would not include in system used to solve this problem.