Question 4
The ratio of Don’s money to Ahmad’s money is 4 : 7. The ratio of Don’s money to Sally’s money is 2 : 1. If they have $\$312$ altogether, how much money does Don have?
**Editorial note for this self-study exercise:** Enter Don’s amount in dollars, without a currency symbol. The source solution’s final label mistakenly calls Sally’s amount Don’s; the correction is explained below.
**Editorial note for this self-study exercise:** Enter Don’s amount in dollars, without a currency symbol. The source solution’s final label mistakenly calls Sally’s amount Don’s; the correction is explained below.