if an article is sold at 19 % profit instead of 12 % profit , then the profit would be $ 84 more . what is the cost price ?
"7 % * cost price = $ 84 1 % * cost price = $ 84 / 7 = $ 12 the cost price is $ 1200 . the answer is b ."
multiply(divide(84, 12), const_100)