A watch is sold for $1840 at a profit of 15% . What should the selling price be such that the profit made is doubled?
一個手表賣出時賺了15%是$1840 那如果那個百分率的賺是雙倍 售價應該是什麼
A shop keeper buys a table for $460 and 6 chairs for $90 each . He sells the table at a profit of 30% and the chairs at a loss of 5%
一個人用$460買了一張桌子和用$90買6張椅子 他賣那桌賺了30%和賣那椅蝕了5%
a) Find the profit from selling the table.
b)Find the loss in selling all the chairs.
c) Find the overall percentage profit.