Question:

For a given interest rate, simple interest varies jointly as

Last updated: 7/25/2022

For a given interest rate, simple interest varies jointly as

For a given interest rate, simple interest varies jointly as the principal and time. If $1000 left in an account for 6 years earned interest of $420, then how much interest would be earned in 7 years? The amount of interest earned in 7 years would be $ (Type an integer or a decimal.)