Question

Last year Lenny had an annual earned income of $58,475. He also had passive income of $1,255, and capital gains of $2,350. What was Lenny’s total gross income for the year?

Answer 1

Not a tax expert, here's my best shot.
From limited information I have, the tax rate for (long-term*) capital gains and income tax rates are the same for taxable incomes up to about 91000$ **.
Also passive income is (usually) taxable.
So the three amounts are added together to get the gross income.
Please double-check with your textbook or notes.

* long-term capital gains is that obtained by keeping the investment for one year or more.
** https://en.wikipedia.org/wiki/Capital_gains_tax_in_the_United_States