$400 intrest is earned on a principal of $2,000 at a simple interest rate of 5% interest per year. For how many years was the principal invested.

$320 to $405

step by step explanation:

in one day he earns between $64 and $81

therefore if he works for 5 days, he will earn between 64 x 5 to 81 x 5

= $320 to $405

the answer to this in exact form is 4/35 but in decimal form its 0.1142857

hope this if needed hmu

if i knew id you bro,, my bad