Answer:
2.2% per year
Step-by-step explanation:
<u>Problem:</u>
You deposit $500 into a bank account and received $55 simple interest after 5 years. What had been the interest rate?
<u>Result:</u>
The interest rate was 2.2% per year.
Explanation:
Find interest rate by using the formula I = P*i*t , where I is interest, P is total principal, i is rate of interest per year, and t is total time in years. In this example I = $55, P = $500 and t = 5 years, so
i = 55/500*5
i=0.022 = 2.2% per year
Hope it helps XD
Answer:
16%
Step-by-step explanation:
let the restaurant bill be 100%
Therefore
If $50=100%
$8=?
Cross multiply
(8×100) ÷50
Ans 16%
Answer:
Step-by-step explanation:
Subtracting 5 from both sides.
Adding fractions since denominators are equal.
Multiplying x on both sides.
Dividing both sides by -2.
<span> Train1 = 85 mph</span>
Train 2 = 105mph
85+105 = 190 mph combined speed
Time = distance/ speed
Time = 456/190 = 2.4 hours = 2 hours and 24 minutes
