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Rico invests some of his savings at 3 percent per year & an equal amount at 5 percent per year. His income totals 1,800 a year. How much did Rico invest at each rate?

Answer 1

Eli Assouline

22500

Let the equal amount in each account be #x#

Then we have: #3%x+5%x=1800#

Factor out the #x#

#x(3%+5%)=1800#

#x xx8/100=1800#

Multiply both sides by #100/8#

#x=1800xx100/8#

#x=225xx100=22500#

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Answer 2

Ethan Adkins

Let ( x ) be the amount Rico invested at 3% per year, and ( y ) be the amount he invested at 5% per year. Then the system of equations is:

( x + y = 1800 )
( 0.03x + 0.05y = 1800 )

Solve the system of equations to find the values of ( x ) and ( y ).

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

Rico invests some of his savings at 3 percent per year &amp; an equal amount at 5 percent per year. His income totals 1,800 a year. How much did Rico invest at each rate?

Rico invests some of his savings at 3 percent per year & an equal amount at 5 percent per year. His income totals 1,800 a year. How much did Rico invest at each rate?