Percent of Change and Simple Interest

Front

What does the 't' represent in the simple interest formula I=Prt?

Back

Time, in years.

Front

How much will Emilio have to pay back in total if he borrows $1200 at 8% simple interest for 2 years?

Back

$1392.

Front

What is the percent of change if the original cost was $50 and the new cost is $60?

Back

Increase 20%.

Front

What does the 'r' in the interest formula I=Prt stand for?

Back

Rate.

Front

If the length changes from 16 meters to 44.2 meters, what type of change is this?

Back

Increase.

Front

What is the formula for calculating simple interest?

Back

I = Prt, where I is interest, P is principal, r is rate, and t is time.

Front

If you invest $1000 at a rate of 5% for 3 years, what is the simple interest earned?

Back

$150.

Front

How do you calculate the total amount to be paid back on a loan?

Back

Total Amount = Principal + Interest.

Front

What is the formula to find the percent of change?

Back

Percent of Change = (New Value - Original Value) / Original Value x 100.

Front

If a shirt originally costs $40 and is now $30, what is the percent of decrease?

Back

Decrease 25%.