Name: Hank Question: I have been unable to determine what formula to use to solve this problem:
what number doubled plus 20 will give you 4/3 the original number thank you Hi Hank,
your line shows the need for some algebra. On the left side of the equation you have "___" to indicate the original number and on the right side you have the phrase "the original number". The algebraic method is to use some symbol, usually a letter, to designate the unknown number. Suppose that N is the original number then you question becomes "Find N if 2 x N + 20 = 4/3(N)".
The first thing I would do with this equation is to multiply both sides by 3 to eliminate the fraction. 6 x N + 60 = 4 x N Now subtract 4 x N rom both sides 2 x N + 60 = 0 Adding 60 to both sides gives 2 x N =  60 Penny
