Question 1120005
B- number of basic calculators
S- number of super calculators
1.{{{B+S=144}}} - Total number of calculators
.
.
2.{{{23*B+90*S=10347}}} - Total value of calculators
From 1,
{{{B=144-S}}}
Substitute into 2,
{{{23(144-S)+90S=10347}}}
{{{3312-23S+90S=10347}}}
{{{67S=7035}}}
Solve for S then use either equation to solve for B.