Betty has 12 times as much as Sheila. Use a comparison bar model.<br><br>
[[model:questions/solutions/q4634.png]]<br><br>
&bull; Sheila = 1 unit, Betty = 12 units<br>
&bull; 12 units = $55.80<br>
&bull; 1 unit = $55.80 ÷ 12 = $4.65 (Sheila)<br>
&bull; Total = 12 + 1 = 13 units<br>
&bull; Total = 13 × $4.65 = $60.45<br>
<br>
The two girls have altogether $60.45.<br>
Check: Betty $55.80 + Sheila $4.65 = $60.45. ✓