Dweezle has 3,500 to invest. he places part of the amount in a stock option that yields 5% interest annually and the rest in a savings account that yields 8% interest annually. If Dweezle earns a total of 238 in interest for the year, what was the amount he placed in the savings account?

Answer 1

If $x is at 8%, then the rest (3500-x) is at 5%. So,

.08x + .05(3500-x) = 238
Now just solve for x.

Extra credit: How much did Moon Unit get to invest?