Thanks you very much for your question. Your questions was –
The sum of the salaries of Tim, Tom and Max is equal to $7500. Tim receives 2/5of the total sum of the salaries, whereas Tom and Max receive 1/5 and 2/5 of the total sum of the salaries. Find out the salary of all of them.

Read my explanation of your question for better understanding.
According to the question,
The sum of the salaries of Tim, Tom and Max = $7500 …..(i)
Tim receives 2/5 of the total sum of the salaries ……(ii)
∴ (2/5)*(7500) = 2*7500/5 = $3000
∴ Tim receives a salary of $3000.
Tom receives 1/5 of the total sum of the salaries ………………….(iii)
∴ (1/5)*(7500) = 7500/5 = $1500
∴ Tom receives a salary of $1500.
Max receive 2/5 of the total sum of the salaries ………………..(iv)
∴ (2/5)*(7500) = $3000
∴ Max receives a salary of $3000.

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