The amount of simple interest accrued on a sum of money varies jointly with the amount of money, the interest rate, and the time the money is invested. a sum of money is invested at 4% for 3 years and accrues $168 in interest. the same sum of money is invested in a second account at 6% for 4 years. which statement is true?

a. the amount of interest accrued on the second account is less than double the amount of interest accrued on the first account.
b. the amount of interest accrued on the second account is double the amount of interest accrued on the first account.
c. the amount of interest accrued on the second account is more than double but less than triple the interest on the first account.
d. the amount of interest accrued on the second account is more than triple the interest accrued on the first account.

Option (B) is correct i.e the amount of interest accrued on the second account is double the amount of interest accrued on the first account.

Step-by-step explanation:

As given

The amount of simple interest accrued on a sum of money varies jointly with the amount of money, the interest rate, and the time the money is invested.

Thus

Formula for simple interest .

As given

A sum of money is invested at 4% for 3 years and accrues $168 in interest.

Put in the above

Principle = $1400

As given

The same sum of money is invested in a second account at 6% for 4 years.

Put in the formula

Simple interest = $336

Thus Option (B) is correct i.e the amount of interest accrued on the second account is double the amount of interest accrued on the first account.

if a = 1,   and b = 2, then the answer is 47.99999999. if you round that to the nearest whole number, the answer is 48.