charles\ worked\ \operatorname{for}12\ hours\ on\ wednesday.\ This\ was\ 3\ times\ as\ long\ as\ he\ workes\ on\ Tuesday.\ How\ many\ hours\ did\ Charles\ work\ on\ tuesday?\

1 answer

Let's denote the number of hours Charles worked on Tuesday as x.

Since Charles worked 3 times as long on Wednesday as on Tuesday, we can write the equation:

12 = 3x

Solving for x:

x = 12 / 3
x = 4

Therefore, Charles worked 4 hours on Tuesday.