a fruit seller had some apples . he sells 40 % apples and still has 420 apples . originally , he had :
"suppose originally he had x apples . then , ( 100 - 40 ) % of x = 420 . 60 / 100 x x = 420 x = ( 420 x 100 ) / 60 = 700 . answer e"
original_price_before_loss(40, 420)