Tutor profile: Isha D.
Steve and Jaya play ping pong. Jaya played 6 more games than Steve and they play 14 games all together, how many games did Steve play?
Use S for the number of games Steve played. Use J for the number of games Jaya played. We are trying to find S. S + J = 14 And we can substitute in S + 6 for J Therefore, we get: S + (S + 6) = 14 2S + 6 = 14 S = 4 So, Steve played four games of ping pong. To check our answer: Jaya played 10 games which is 6 more than Steve who played 4 games and 10 + 4 = 14 which is how many games were played total.
Subject: Basic Math
How many minutes are in a day if there are 60 minutes in an hour and 24 hours in a day?
60 minutes x 24 hours = 1440 minutes.
Compound Interest: A (final amount) = P (1+ (r/n))^nt P = initial value, r = interest rate, n = times per a certain period (ex: 1 year), and t = # of time periods or compounded continuously A = Pe^(rt) Let's say we invest $50,000 at an interest rate of 8.5% compounded quarterly (4 times a year), for one year. How much money will we have after 1 year?
So, in this case, it will not be compounded continuously so we can use the first case A = 50,000 (1 + (.085/4))^(4*1) We can plug the expression into our calculator and then we get a value of $54,387.40 which is how much money we'll have if all these conditions were true in the real world. So we can adjust the values in the formula to determine the total amount of money there would be in any kind of compound interest problem using this formula (unless compounded continuously, where we would use Pe^(rt).
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