Question 1137465: Hi guys, I would be grateful if anyone could take the time to help me understand and solve this math problem. I'm overwhelmed with anxiety.
For a given interest rate, simple interest varies jointly as the principal and time. If $3000 left in an account for 5 years earned interest of $750, then how much interest would be earned in 7 years?
Found 2 solutions by ikleyn, MathTherapy:
Answer by ikleyn(52794)   (Show Source):
You can put this solution on YOUR website! .
Step 1. Knowing the interest earned in 5 years, calculate the interest earned in 1 year.
HINT. It is  of $750.
Step 2. When you know the result from n.1, you just know what to do next, isn't it ?
Answer by MathTherapy(10552)  (Show Source):
You can put this solution on YOUR website!
Hi guys, I would be grateful if anyone could take the time to help me understand and solve this math problem. I'm overwhelmed with anxiety.
For a given interest rate, simple interest varies jointly as the principal and time. If $3000 left in an account for 5 years earned interest of $750, then how much interest would be earned in 7 years?
With I being the interest earned in 7 years, form a PROPORTION, the likes of: 
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