Let cost price be x according to question x + 40% of x = 280 x+ 0.4x=280 1.4x=280 x=200 this 200 is the store cost or cost price for store 30%of 200= 60 according to question, cost for employee= 200-60= 140
135 cubes because if you multiply all the sides you get 2 7/64 so then you multiply that with 1/4 and you get 135/256. Just use the top number. I hope this helps!