Mr See got 1675 dollars from selling 50 thumb drives and keyboards. The thumb drives were 24 dollars each and the keyboards were 49 dollars each. How many keyboards did he sell?

Question

Please solve this as a grade 5 word problem

Answer 1

Total thumb drive sales=50×24=$1200, so he got 1675-1200=$475 for the keyboards. The keyboards are $49 each so he sold 475/49=9.69. This is not an exact number so he must have sold no more than 9 keyboards. If he’d sold 10 keyboards he would have got $490 ($15 more than he did get, making the total sales $1690 instead of $1675). 9 keyboards would sell for $441 (making the total sales $1641 instead of $1675), which leaves 475-441=$34 unaccounted for (perhaps it was commission, which would be 34/1641=2.1% approx).