dr. Trekcir has $875 to invest. he invests some of it in account#1 paying 8% annual interest and the rest of it in account#2 paying 4% annual interest. After 1 year total interest is $49.00. find hou much is invested in each account
Here's what the equation would look like (I'm using the variable n for the investments): 0.08n + 0.04(875-n) = 49 Multiply both sides by 100: 8n + 3500 - 4n = 4900 Simplify: 4n+3500=4900 Isolate n: 4n = 1400 n = 350 8% invested: 350 4% invested: 525
