Anyone help?? ive friends take a maths test
Adam, Brandon, Chen together scored 200 marks
Brandon, Chen and Damion together scored 215
Chen, Damion, Erica together scored 224
Damion and Erica scored more than Chen
The five of them together scored 350 marks

What are their individual scores

Step-by-step explanation:

Given

Represent each friend with the first letter of their name

So:

Substitute: in

Collect like terms

Make D + E the subject in

Substitute in

Collect like terms

Substitute in and

So, we have:

We have:

i.e.

and

For and to be true,

i.e.

So, we have:

Solve for B

Solve for A

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step-by-step explanation:

none of the above.

for one of the equations to be used in the process, there has to be a term in the equation since squared is .

since there is only a term in the first equation, we cannot derive a from completing the square.

solving with completing the square