Math for Kids

Recent Answers

2013-05-18 Basic Math - Mathematics:

d = rt.  the distance for one = d and the other is 110-d, the rate is 25kph and 30kph and the time is equal, so you have 2 equations, d=25(t) and 110-d = 30t.  Since we know that the time is equal, if

2013-05-17 Basic Math - Mathematics:

on the third day you had 3, so the remainder on the second day was    3/4x = 3  x = 4, so you had 6 at the end of day one.  So on day one, the remainder was      3/4x = 6  x = 8, so you started with 9

2013-05-16 Word Problems - math:

"the change is all in nickels and dimes."    n and d are the numbers of nickels and dimes, respectively.    "there are 2 times as many dimes as nickels"  d = 2n    "the value of the dimes is 1.65 more

2013-05-15 Algebra - Alg2 solving inequalities and absolute values:

To solve 2|9t-3| + 4t ≤ 12, what matters is whether 9t-3 is positive or negative.    If 9t-3 is positive, the equation is 2(9t-3) + 4t ≤ 12.  If 9t-3 is negative, the equation is 2(-9t+3) +

2013-05-13 Word Problems - Percent Definition:

I disagree with the definition you were given. Percent does indeed mean "per hundred," but a percentage is not limited to 0 through 100.   For example, if you have a sales goal of 30 books and you sell