Question 983515
Carla:  {{{0.05*n+0.1d=2.40}}}
The n and d here are for Carla.


Deron:  q for how many quarters for Deron.
{{{0.1*n+0.25*d=5.50}}}
Reference must be made to Carla's coin counts according to the written description to form the equation.



Multiply all members by 20.
Carlas: {{{ n+2d=48}}}
Deron: {{{2n+5d=110}}}
These variables are FOR CARLA; the counts for Deron are to be checked according to his description.


{{{system(n+2d=48,2n+5d=110)}}}


Review the discussion and think, and then continue to solve the system.