Question

If a man purchases 156 cell phones for $32 each and sells half of them for $45 each and the remainder for $39 each, how much profit will he make?

Answer 1

I got a profit of `color(blue)($1560)`

Explanation:

Noting that half of `156` is `78`

#{: (color(white)("xxxxxxxx"),,ul("Cost"),,"|",ul("Sales"),,), ("num. of units:","||",156,,"|",78,,), ("unit value:","||",ul($32),$4992,"|",ul($45),$3510,), ("num. of units:","||",,,"|",78,,), ("unit value:","||",,,"|",ul($39),ul($3042),$6552) :}#

`"Profit" = "Total sales value" - "Total cost"`
`color(white)("XXxX")=$6552-$4992=color(blue)($1560)`